Te Whatu Ora Waitaha | Canterbury Pānui Monday 15 April 2024

Health New Zealand | Te Whatu Ora has lifted its algal bloom health warning issued for Te Roto o Wairewa | Lake Forsyth.

Recent water testing at Te Roto o Wairewa | Lake Forsyth has shown the quantity of potentially toxic blue-green algae (planktonic cyanobacteria) in the lake has reduced and concentrations are now below levels that are of concern to public health.

Dr Cheryl Brunton, Medical Officer of Health for National Public Health Service, says Environment Canterbury’s sampling of Te Roto o Wairewa | Lake Forsyth will continue on a monthly basis.

“The public will be informed if testing shows that concentrations have increased and there is a risk to public health again”.

Facts about cyanobacteria

• The algae occur naturally but can increase rapidly during warmer months
• Algal blooms are caused by a combination of nutrients in the water (such as nitrogen and phosphorus), and favourable weather conditions (e.g., increased temperature, calm days)
• If the water is cloudy, discoloured, or has small globules suspended in it, avoid all contact
• Not all cyanobacterial blooms are visible to the naked eye and toxins can persist after the blooms disappear
• Cyanobacterial concentrations can change quickly with changing environmental conditions (e.g., wind). If a health warning is in place avoid contact with the water
• If a warning is in place, people and animals should not drink the water from the lake at any time, even boiled water
• Exposure to an algal bloom can cause skin rashes, nausea, stomach cramps, tingling and numbness around the mouth and fingertips. If you experience any of these symptoms visit your doctor immediately and please let your doctor know if you have had contact with lake water when there is a health warning in place.

For further details visit: www.lawa.org.nz/explore-data/canterbury-region/

Or contact Te Mana Ora | Community and Public Health on (03) 364 1777: www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai: www.cph.co.nz/wp-content/uploads/saf0112.pdf

ENDS

Health New Zealand | Te Whatu Ora has lifted its algal bloom health warning issued for the Waikirikiri-Selwyn River at Glentunnel.

Recent cyanobacteria surveys of the Waikirikiri-Selwyn River at Glentunnel has shown the cover of potentially toxic algae (benthic cyanobacteria) in the river has reduced and is now below levels that are of concern to public health.

Dr Ramon Pink, Medical Officer of Health for National Public Health Service, says Environment Canterbury’s monitoring of the Waikirikiri-Selwyn River will continue to the end of this summer and then will resume next summer when there is increased likelihood of cyanobacteria growth.

Facts about cyanobacteria:

• Appears as dark brown/black mats attached to rocks along the riverbed
• A low cover of the algae can occur naturally but can increase rapidly during warmer months. Algal blooms are influenced by a combination of available nutrients in the water and sediments (such as nitrogen and phosphorus), a sustained period of low and stable flows, and favourable weather conditions (e.g., increased temperature, calm days)
• It often has a strong musty smell and algal toxin concentrations can vary over short periods
• Although high river levels will remove the algal bloom, detached mats can accumulate along the shore and increase the risk of exposure to toxins
• If a health warning is in place avoid contact with the water
• Although district or city councils may place warning signs, these may not be seen at the numerous river access points, hence the need for people/ dog-walkers to treat every low-flowing river cautiously.

For further details visit: https://www.lawa.org.nz/explore-data/canterbury-region/

Or contact Te Mana Ora | Community and Public Health on (03) 364 1777:

https://www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai:

https://www.cph.co.nz/wp-content/uploads/saf0112.pdf

ENDS

For further information, contact:

Karen Berry
Public Health Communications Lead
National Public Health Service
Te Waipounamu
Health NZ
021 139 7442
kberry@scdhb.health.nz

Health New Zealand | Te Whatu Ora has lifted its algal bloom health warning issued for the Ashley/Rakahuri River at State Highway 1. This was issued on 05/12/2023.

Recent cyanobacteria surveys of the Ashley/Rakahuri River has shown the cover of potentially toxic algae (benthic cyanobacteria) in the river has reduced and is now below levels that are of concern to public health.

Dr Ramon Pink, Medical Officer of Health for National Public Health Service, says Environment Canterbury’s monitoring of Ashley/Rakahuri will continue to the end of this summer and then will resume next summer when there is increased likelihood of cyanobacteria growth.

Facts about cyanobacteria:

• Appears as dark brown/black mats attached to rocks along the riverbed
• A low cover of the algae can occur naturally but can increase rapidly during warmer months. Algal blooms are influenced by a combination of available nutrients in the water and sediments (such as nitrogen and phosphorus), a sustained period of low and stable flows, and favourable weather conditions (e.g., increased temperature, calm days).
• It often has a strong musty smell and algal toxin concentrations can vary over short periods
• Although high river levels will remove the algal bloom, detached mats can accumulate along the shore and increase the risk of exposure to toxins
• If a health warning is in place avoid contact with the water
• Although district or city councils may place warning signs, these may not be seen at the numerous river access points, hence the need for people/ dog-walkers to treat every low-flowing river cautiously.

For further details visit: https://www.lawa.org.nz/explore-data/canterbury-region/

Or contact Te Mana Ora | Community and Public Health on (03) 364 1777:

https://www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai:

https://www.cph.co.nz/wp-content/uploads/saf0112.pdf

ENDS

For further information, contact:

Karen Berry
Public Health Communications Lead  
National Public Health Service
Te Waipounamu
Health NZ
021 139 7442
kberry@scdhb.health.nz

Health New Zealand |Te Whatu Ora has lifted its algal bloom health warning issued for the Ashley River above Rangiora-Loburn Bridge. This was issued on 20/12/2023.

Recent cyanobacteria surveys of the Ashley River above Rangiora-Loburn Bridge has shown the cover of potentially toxic algae (benthic cyanobacteria) in the river has reduced and is now below levels that are of concern to public health.

Dr Cheryl Brunton, Medical Officer of Health for National Public Health Service, says Environment Canterbury’s monitoring of Ashley River above Rangiora-Loburn Bridge will continue to the end of this summer and then will resume next summer when there is increased likelihood of cyanobacteria growth.

The warning(s) to remain out of the following waterway(s) due to ongoing algal blooms is/are still in place.

Facts about cyanobacteria:

• Appears as dark brown/black mats attached to rocks along the riverbed.
• A low cover of the algae can occur naturally but can increase rapidly during warmer months. Algal blooms are influenced by a combination of available nutrients in the water and sediments (such as nitrogen and phosphorus), a sustained period of low and stable flows, and favourable weather conditions (e.g., increased temperature, calm days).
• It often has a strong musty smell and algal toxin concentrations can vary over short periods.
• Although high river levels will remove the algal bloom, detached mats can accumulate along the shore and increase the risk of exposure to toxins.
• If a health warning is in place avoid contact with the water.
• Although district or city councils may place warning signs, these may not be seen at the numerous river access points, hence the need for people/ dog-walkers to treat every low-flowing river cautiously.

For further details visit: https://www.lawa.org.nz/explore-data/canterbury-region/

Or contact Te Mana Ora | Community and Public Health on (03) 364 1777:

https://www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai:

https://www.cph.co.nz/wp-content/uploads/saf0112.pdf

ENDS

Health New Zealand |Te Whatu Ora has issued a health warning for Ashburton River/Hakatere SH1.

The warning follows finding moderate to high cover of potentially toxic algae (benthic cyanobacteria) in the Ashburton River/Hakatere SH1.

People should avoid the area and animals, particularly dogs, should not be allowed near the water until the health warning has been lifted.

There are also other access points along the Ashburton River/Hakatere SH1 that may have benthic cyanobacteria present. People are advised to treat every low-flowing river cautiously, check for the presence of benthic cyanobacteria and avoid contact.

Dr Cheryl Brunton, Medical Officer of Health for National Public Health Service, says the algae look like dark brown to black mats and can produce toxins harmful to people and animals.

“Exposure may cause skin rashes, nausea, stomach cramps, tingling and numbness around the mouth and fingertips.”

“If you experience any of these symptoms, visit your doctor immediately, also let your doctor know if you’ve had contact with dark brown/black algal mats or water in this area”, Dr Brunton says.

Pets that show signs of illness after coming into contact with algal mats should be taken to a vet immediately.

People and animals should remain out of the waterways until the warnings have been lifted.

Environment Canterbury is monitoring the sites and the public will be advised of any changes in water quality.

Facts about cyanobacteria:

• Appears as dark brown/black mats attached to rocks along the riverbed.
• A low cover of the algae can occur naturally but can increase rapidly during warmer months. Algal blooms are influenced by a combination of available nutrients in the water and sediments (such as nitrogen and phosphorus), a sustained period of low and stable flows, and favourable weather conditions (e.g., increased temperature, calm days).
• It often has a strong musty smell and algal toxin concentrations can vary over short periods.
• Although high river levels will remove the algal bloom, detached mats can accumulate along the shore and increase the risk of exposure to toxins.
• If a health warning is in place avoid contact with the water.
• Although district or city councils may place warning signs, these may not be seen at the numerous river access points, hence the need for people/ dog-walkers to treat every low-flowing river cautiously.

For further details visit: https://www.lawa.org.nz/explore-data/canterbury-region/

Or contact Te Mana Ora | Community and Public Health on (03) 364 1777:

https://www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai:

https://www.cph.co.nz/wp-content/uploads/saf0112.pdf

ENDS

Health New Zealand |Te Whatu Ora has lifted its algal bloom health warning issued for the Selwyn River at the Upper Huts. The health warning was issued on 17 January 2024 and is lifted as of 26 February 2024.

Recent cyanobacteria surveys of the Selwyn River at the Upper Huts have shown the cover of potentially toxic algae (benthic cyanobacteria) in the river has reduced and is now below levels that are of concern to public health.

Dr Cheryl Brunton, Medical Officer of Health for National Public Health Service, says Environment Canterbury’s monitoring of Selwyn River at the Upper Huts will continue to the end of this summer and then will resume next summer when there is increased likelihood of cyanobacteria growth.

Facts about cyanobacteria:

1. Appears as dark brown/black mats attached to rocks along the riverbed.
2. A low cover of the algae can occur naturally but can increase rapidly during warmer months. Algal blooms are influenced by a combination of available nutrients in the water and sediments (such as nitrogen and phosphorus), a sustained period of low and stable flows, and favourable weather conditions (e.g., increased temperature, calm days).
3. It often has a strong musty smell and algal toxin concentrations can vary over short periods.
4. Although high river levels will remove the algal bloom, detached mats can accumulate along the shore and increase the risk of exposure to toxins.
5. If a health warning is in place avoid contact with the water.
6. Although district or city councils may place warning signs, these may not be seen at the numerous river access points, hence the need for people/ dog-walkers to treat every low-flowing river cautiously.

For further details visit: https://www.lawa.org.nz/explore-data/canterbury-region/

Or contact Te Mana Ora | Community and Public Health on (03) 364 1777:

https://www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai:

https://www.cph.co.nz/wp-content/uploads/saf0112.pdf

ENDS

Te Whatu Ora has issued a public health warning for smoke from the fire located near Cracroft, Christchurch.

Air around this location is smoky and there is potential that people who are sensitive to smoke – such as those with heart or lung conditions, people who are pregnant, young children and the elderly – may experience symptoms like coughing, shortness of breath or eye, nose and throat irritation.

Dr Matt Reid, Medical Officer of Health for the National Public Health Service says exposure to smoke can worsen pre-existing health conditions such as heart and lung disease.

“People affected by the smoke should close windows and doors and reduce outdoor exercise”.

The experience of being exposed to an event like a fire can be distressing and it’s normal to feel anxious in situations like this. If you are feeling anxious or just need someone to talk to, you can call or text 1737 any time and you can speak to (or text) a trained counsellor free of charge or call Healthline on 0800 611 116.

If you see or smell smoke outside, you should stay inside if it is safe to do so.

Remember to:

• Keep your windows and doors shut
• Switch your air conditioning to ‘recirculate’
• Air out your house when the smoke clears
• Look out for children, older people, and others at risk
• Keep pets inside with clean water and food. Keep pets’ bedding inside if possible.

ENDS

For further information, contact:

Karen Berry
Public Health Communications Lead, Te Waipounamu
National Public Health Service
Te Whatu Ora – Health New Zealand
021 139 7442
kberry@scdhb.health.nz

Lyttelton residents are being urged to check their properties for potential mosquito breeding habitats.

One of the roles of our Health Protection Officers* is to monitor the areas around Christchurch Airport and Lyttelton Port for any evidence of mosquitoes that may have entered the country that could be a threat to public health. Malaria, dengue fever, and Ross River fever are serious and sometimes deadly diseases that can be carried by blood sucking mosquitoes.

“If exotic mosquitoes were to sneak through, breed, and infect people, the results could be disastrous. The diseases they carry cause severe illness and can be fatal. With climate change potentially making our environment more comfortable for these mosquitoes, an outbreak could have significant cost implications for the health system, and eradication campaigns can cost millions,” says Dr Matt Reid, Medical Officer of Health for the National Public Health Service.

“A number of exotic mosquitoes have been found at New Zealand borders but have failed to get established because of the work of Health Protection Officers and Biosecurity staff, and we want to keep it that way.”

An important part of this work is regularly visiting Lyttelton Port and Christchurch International Airport to look for adult mosquitoes and larvae in traps positioned in and around these facilities. However, the team also identifies potential breeding grounds for mosquitoes.

“In Lyttelton, the residential area is very close to the Port. While we do not monitor the residential area, we want to raise awareness because the public can play a large role in removing places where mosquitoes could breed.

“We want to reduce the risk that exotic mosquitoes will breed successfully by asking all Lyttelton residents to check their property and get rid of stagnant water that may collect on properties. Mosquitoes struggle in the cold but with the recent warm weather, areas of stagnant and pooled water can be perfect breeding grounds.

“There are a number of things people can do to reduce potential mosquito breeding places, and stopping exotic mosquitoes getting a foothold in New Zealand. These include emptying water out of or getting rid of any buckets, tins, jars and other items like playground equipment that may hold water; regularly emptying and cleaning pot plant saucers; and turning boats, dinghies, and kayaks upside down to prevent water pooling.

The larvae and mosquitoes our team catch are sent to a Biosecurity New Zealand laboratory in Wellington to see if they are native or exotic. In addition to regular surveillance, the health protection officers are called on if Ministry of Primary Industry (MPI) staff find mosquitoes during their work at ports and airports.

Note to reporters:

*The National Public Health Service at Te Whatu Ora is responsible for improving, promoting and protecting the health of the community. Health Protection Officers are a crucial part of that work and they plan and implement activities that protect health and wellbeing in communities. Areas of specific focus are environmental health and communicable diseases. Environmental issues covered include bio-security and quarantine, recreational water quality, hazardous substances, and resource management issues. They also contribute to the management of sustainable environments.

Health Protection Officers also undertake surveillance and investigation of communicable disease. They prevent diseases spreading by food and water and also enforce effective waste disposal.

Further information on mosquito breeding can be found here: www.tewhatuora.govt.nz/our-health-system/environmental-health/pests-insects-bites-and-stings/mosquitoes/stop-mosquitoes-breeding

ENDS

Te Whatu Ora National Public Health Service has issued a public health warning for smoke from the fire located near Glasnevin in the Hurunui District (Canterbury).

Air around this location is smoky and there is potential that people who are sensitive to smoke – such as those with heart or lung conditions, people who are pregnant, young children and the elderly – may experience symptoms like coughing, shortness of breath or eye, nose and throat irritation.

Dr Cheryl Brunton, Medical Officer of Health National Public Health Service says exposure to smoke can worsen pre-existing health conditions such as heart and lung disease.

“People affected by the smoke should close windows and doors and reduce outdoor exercise.”

The experience of being exposed to an event like a fire can be distressing and it’s normal to feel anxious in situations like this. If you are feeling anxious or just need someone to talk to, you can call or text 1737 any time and you can speak to (or text) a trained counsellor free of charge or call Healthline on 0800 611 116.

If you see or smell smoke outside, you should stay inside if it is safe to do so.

Remember to:

• Keep your windows and doors shut.
• Switch your air conditioning to ‘recirculate’.
• Air out your house when the smoke clears.
• Look out for children, older people, and others at risk.
• Keep pets inside with clean water and food. Keep pets’ bedding inside if possible. 

ENDS

For further information, contact: communications@cdhb.health.nz

Stay cool this Waitangi Day Cantabrians – Drink plenty of water, stay in cool places out of the sun, wear light, loose cotton clothing.

Cantabrians away on a long weekend and celebrating Waitangi Day are being urged to keep cool and hydrated during the anticipated spell of soaring temperatures expected to sweep through the region.

Hot weather is forecast for Monday 5 and Tuesday 6 February with temperatures predicted to get to a maximum of 33 degrees.

Dr Ramon Pink, Canterbury Medical Officer of Health, says while we may welcome a run of hot weather the heat can affect us all and overheating is a condition that can prove fatal.

“It's especially important to stay out of the sun where possible, avoid extreme physical exertion, and ensure pets and people are not left alone in stationary cars.

“While we are all vulnerable to hot temperatures, some people are particularly at risk. This includes the elderly, infants and children, women who are pregnant, people suffering from chronic, acute and severe illness,” says Dr Pink.

There are some simple steps that we can all take to reduce the risk to our health when the temperatures are high. They include:

• Avoiding going outside during the hottest time of the day
• Drinking plenty of water and avoiding alcohol and caffeine
• Wearing lightweight, loose-fitting, light-coloured cotton clothes

Dr Pink says people whose work involves strenuous physical activity outdoors should be particularly vigilant to avoid overheating in hot weather.

“It’s important people exposed to hot weather for long periods of time carry water with them and sip at least half a litre an hour, allow for more breaks in the shade, reapply sunscreen every two hours, and schedule the hardest work in the coolest part of the day.

“As well as being SunSmart (Slip, Slop, Slap & Wrap) if you have to go outside, everyone is advised to keep their houses cool by closing curtains on windows getting direct sun, opening windows to get a breeze if it's cooler out than in, and consider using the cool cycle on heat pumps,” says Dr Pink.

If it’s not possible to keep your home cool, you should look to spend a few hours of the day in a cool place e.g. an air-conditioned public building, Marae, or church, all of which tend to be cool in summer.

People should keep medicines below 25 degrees Celsius or in the refrigerator (read the storage instructions on the packaging).

If you feel dizzy, weak, or have an intense thirst or headache you may be dehydrated. Drink some water and rest in a cool place. If your symptoms persist or you’re concerned about your health, or someone else's, seek medical advice.

Remember you can call Healthline  24/7 for free health advice on 0800 611 116.  If you need to be seen, they can tell you what to do and where to go if you need to be seen urgently.

ENDS

For further information, contact: communications@cdhb.health.nz

Te Whatu Ora has issued a health warning after potentially toxic blue-green algae (planktonic cyanobacteria) was found in Te Roto o Wairewa – Lake Forsyth. People should avoid the lake and animals, particularly dogs, should not be allowed near the water until the health warning has been lifted.

The type of cyanobacteria that is currently present in high concentrations is Planktonic cyanobacteria in bright green paint-like blooms.

Dr Ramon Pink, Medical Officer of Health for National Public Health Service, says the algal bloom can produce toxins harmful to humans and animals. “People should avoid contact with the water until further notice.”

“Exposure may cause skin rashes, nausea, stomach cramps, tingling, and numbness around the mouth and fingertips. If you experience any of these symptoms visit your doctor immediately and please let your doctor know if you have had contact with the lake water”, says Dr Ramon Pink.

No one should drink the water from the lake at any time. Boiling the water does not remove the toxin.

Animals that show signs of illness after coming into contact with algal mats or scums should be taken to a vet immediately.

Fish and shellfish can concentrate toxins and their consumption should be avoided. If fish are eaten, remove the gut and liver and wash them in clean water.

Further information on gathering Mahinga Kai can be obtained below.

“When a bloom of potentially toxic cyanobacteria is present in a lake, there is a possibility of cyanobacteria and toxins being transported downstream.

“People are advised to avoid contact with the downstream water bodies,” says Dr Ramon Pink.

Environment Canterbury monitors the lake weekly during summer and the public will be advised of any changes in water quality that are of public health significance.

Facts about cyanobacteria:

• Appears as dark brown/black mats attached to rocks along the riverbed.
• A low cover of the algae can occur naturally but can increase rapidly during warmer months. Algal blooms are influenced by a combination of available nutrients in the water and sediments (such as nitrogen and phosphorus), a sustained period of low and stable flows, and favourable weather conditions (e.g. increased temperature, calm days).
• It often has a strong musty smell and algal toxin concentrations can vary over short periods.
• Although high river levels will remove the algal bloom, detached mats can accumulate along the shore and increase the risk of exposure to toxins.
• If a health warning is in place avoid contact with the water.
• Although district or city councils may place warning signs, these may not be seen at the numerous river access points, hence the need for people/ dog-walkers to treat every low-flowing river cautiously.

For further details visit: https://www.lawa.org.nz/explore-data/canterbury-region/

Or contact the Canterbury Public Health team on (03) 364 1777:

https://www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai:

https://www.cph.co.nz/wp-content/uploads/saf0112.pdf

For further information, contact:

communications@cdhb.health.nz

ENDS

Te Whatu Ora has issued a public health warning for smoke from the fires located on Racecourse Road in Amberley and on Loburn Whiterock Road near Loburn.

Air around these locations is smoky and there is potential that people who are sensitive to smoke – such as those with heart or lung conditions, pregnant women, young children and the elderly – may experience symptoms like coughing, shortness of breath or eye, nose and throat irritation.

Dr Matt Reid, Canterbury Medical Officer of Health, National Public Health Service says exposure to smoke can worsen pre-existing health conditions such as asthma, heart disease and lung disease.

“People affected by the smoke should close windows and doors and reduce outdoor exercise.”

The experience of being exposed to an event like a fire can be distressing and it’s normal to feel anxious in situations like this. If you are feeling anxious or just need someone to talk to, you can call or text 1737 any time and you can speak to (or text) a trained counsellor free of charge or call Healthline on 0800 611 116.

If you see or smell smoke outside, you should stay inside if it is safe to do so.

Remember to:

• Keep your windows and doors shut.
• Switch your air conditioning to ‘recirculate’.
• Air out your house when the smoke clears.
• Look out for children, older people, and others at risk.
• Keep pets inside with clean water and food. Keep pets’ bedding inside if possible.

For further information, contact:

communications@cdhb.health.nz

ENDS

Stay cool and well this summer – Drink plenty of water, stay in cool places out of the sun, wear light, loose cotton clothing

Cantabrians are being urged to keep cool and hydrated during what looks set to be a stretch of scorching temperatures hitting the region.

Hot weather is forecast for Friday 19 January and Saturday 20 January with temperatures predicted to get to a maximum of 32 degrees.

Dr Matt Reid, Canterbury Medical Officer of Health, says while we may welcome a run of hot weather the heat can affect us all and overheating is a condition that can prove fatal.

“It's especially important to stay out of the sun where possible, avoid extreme physical exertion, and ensure pets and people are not left alone in stationary cars.

“While we are all vulnerable to hot temperatures, some people are particularly at risk. This includes the elderly, infants and children, women who are pregnant, people suffering from chronic, acute and severe illness,” says Dr Reid.

There are some simple steps that we can all take to reduce the risk to our health when the temperatures are high. They include:

• Avoiding going outside during the hottest time of the day
• Drinking plenty of water and avoiding alcohol and caffeine
• Wearing lightweight, loose-fitting, light-coloured cotton clothes

Dr Matt Reid says people whose work involves strenuous physical activity outdoors should be particularly vigilant to avoid overheating in hot weather.

“It’s important people exposed to hot weather for long periods of time carry water with them and sip at least half a litre an hour, allow for more breaks in the shade, reapply sunscreen every two hours, and schedule the hardest work in the coolest part of the day.

“As well as being SunSmart (Slip, Slop, Slap & Wrap) if you have to go outside, everyone is advised to keep their houses cool by closing curtains on windows getting direct sun, opening windows to get a breeze if it's cooler out than in, and consider using the cool cycle on heat pumps,” says Dr Reid.

If it’s not possible to keep your home cool, you should look to spend a few hours of the day in a cool place e.g. an air-conditioned public building, Marae, or church, all of which tend to be cool in summer.

People should keep medicines below 25 degrees Celsius or in the refrigerator (read the storage instructions on the packaging).

If you feel dizzy, weak, or have an intense thirst or headache you may be dehydrated. Drink some water and rest in a cool place. If your symptoms persist or you’re concerned about your health, or someone else's, seek medical advice.

Remember you can call Healthline  24/7 for free health advice on 0800 611 116.  If you need to be seen, they can tell you what to do and where to go if you need to be seen urgently.

ENDS

For further information, contact: communications@cdhb.health.nz

Te Whatu Ora has issued a health warning for Waikirikiri-Selwyn River at the Upper Huts.

The warning follows finding moderate to high cover of potentially toxic algae (benthic cyanobacteria) in the Waikirikiri-Selwyn River.

People should avoid the area and animals, particularly dogs, should not be allowed near the water until the health warning has been lifted.

There are also other access points along the Waikirikiri-Selwyn River that may have benthic cyanobacteria present. People are advised to treat every low-flowing river cautiously, check for the presence of benthic cyanobacteria and avoid contact.

Dr Ramon Pink, Medical Officer of Health, National Public Health Service, says the algae look like dark brown to black mats and can produce toxins harmful to people and animals.

“Exposure may cause skin rashes, nausea, stomach cramps, tingling and numbness around the mouth and fingertips.”

“If you experience any of these symptoms, visit your doctor immediately, also let your doctor know if you’ve had contact with dark brown/black algal mats or water in this area”, Dr Pink says.

Pets that show signs of illness after coming into contact with algal mats should be taken to a vet immediately. People and animals should remain out of the waterways until the warnings have been lifted. Environment Canterbury is monitoring the sites and the public will be advised of any changes in water quality.

Facts about cyanobacteria:

·         Appears as dark brown/black mats attached to rocks along the riverbed.

·         A low cover of the algae can occur naturally but can increase rapidly during warmer months. Algal blooms are influenced by a combination of available nutrients in the water and sediments (such as nitrogen and phosphorus), a sustained period of low and stable flows, and favourable weather conditions (e.g. increased temperature, calm days).

·         It often has a strong musty smell and algal toxin concentrations can vary over short periods.

·         Although high river levels will remove the algal bloom, detached mats can accumulate along the shore and increase the risk of exposure to toxins.

·         If a health warning is in place avoid contact with the water.

·         Although district or city councils may place warning signs, these may not be seen at the numerous river access points, hence the need for people/ dog-walkers to treat every low-flowing river cautiously.

For further details visit: https://www.lawa.org.nz/explore-data/canterbury-region/

Or contact the Canterbury Public Health team on (03) 364 1777:

https://www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai:

https://www.cph.co.nz/wp-content/uploads/saf0112.pdf

For further information, contact:

communications@cdhb.health.nz

ENDS

Stay cool and well this summer – Drink plenty of water, stay in cool places out of the sun, wear light, loose cotton clothing

Cantabrians are being urged to keep cool and hydrated during what looks set to be a stretch of scorching temperatures hitting the region this week.

Hot weather is forecast for Thursday 11 January with temperatures predicted to get to a maximum of 32 degrees.

Dr Matt Reid, Canterbury Medical Officer of Health, says while we may welcome a run of hot weather the heat can affect us all and overheating is a condition that can prove fatal.

“It's especially important to stay out of the sun where possible, avoid extreme physical exertion, and ensure pets and people are not left alone in stationary cars.

“While we are all vulnerable to hot temperatures, some people are particularly at risk. This includes the elderly, infants and children, women who are pregnant, people suffering from chronic, acute and severe illness,” says Dr Reid.

There are some simple steps that we can all take to reduce the risk to our health when the temperatures are high. They include:

• Avoiding going outside during the hottest time of the day
• Drinking plenty of water and avoiding alcohol and caffeine
• Wearing lightweight, loose-fitting, light-coloured cotton clothes

Dr Matt Reid says people whose work involves strenuous physical activity outdoors should be particularly vigilant to avoid overheating in hot weather.

“It’s important people exposed to hot weather for long periods of time carry water with them and sip at least half a litre an hour, allow for more breaks in the shade, reapply sunscreen every two hours, and schedule the hardest work in the coolest part of the day.

“As well as being SunSmart (Slip, Slop, Slap & Wrap) if you have to go outside, everyone is advised to keep their houses cool by closing curtains on windows getting direct sun, opening windows to get a breeze if it's cooler out than in, and consider using the cool cycle on heat pumps,” says Dr Reid.

If it’s not possible to keep your home cool, you should look to spend a few hours of the day in a cool place e.g. an air-conditioned public building, Marae, or church, all of which tend to be cool in summer.

People should keep medicines below 25 degrees Celsius or in the refrigerator (read the storage instructions on the packaging).

If you feel dizzy, weak, or have an intense thirst or headache you may be dehydrated. Drink some water and rest in a cool place. If your symptoms persist or you’re concerned about your health, or someone else's, seek medical advice.

Remember you can call Healthline  24/7 for free health advice on 0800 611 116.  If you need to be seen, they can tell you what to do and where to go if you need to be seen urgently.

ENDS

For further information, contact: communications@cdhb.health.nz

Te Mana Ora | Community and Public Health has issued a health warning after potentially toxic blue-green algae (planktonic cyanobacteria) was found in Lake Pegasus.

People should avoid the Lake and animals, particularly dogs, should not be allowed near the water until the health warning has been lifted.

The type of cyanobacteria that is currently present is Dolichospermum (formerly called Anabaena) which can be present as green globules floating in the water column or form surface scums or sheens.

Dr Cheryl Brunton,  Medical Officer of Health of Te Mana Ora, National Public Health Service, says the algal bloom can produce toxins harmful to humans and animals.

“People should avoid contact with the water until further notice.”

“Exposure may cause skin rashes, nausea, stomach cramps, tingling and numbness around the mouth and fingertips. If you experience any of these symptoms visit your doctor immediately and please let your doctor know if you have had contact with the lake water”, Dr Brunton says.

No one should drink the water from the lake at any time. Boiling the water does not remove the toxin.

Animals that show signs of illness after coming into contact with algal mats or scums should be taken to a vet immediately.

Fish and shellfish can concentrate toxins and their consumption should be avoided. If fish are eaten, remove the gut and liver and wash in clean water.

Further information on gathering Mahinga Kai can be obtained below.

“When a bloom of potentially toxic cyanobacteria is present in a lake, there is a possibility of cyanobacteria and toxins being transported downstream.

“People are advised to avoid contact with the downstream water bodies,” says Dr Brunton.

Environment Canterbury monitors the lake weekly during summer and the public will be advised of any changes in water quality that are of public health significance.

Warning(s) to avoid the following waterway(s) due to ongoing algal blooms is/are still in place.

Facts about cyanobacteria

• Cyanobacteria occur naturally but can increase rapidly during warmer months.
• Algal blooms are caused by a combination of nutrients in the water (such as nitrogen and phosphorus), and favourable weather conditions (e.g., increased temperature, calm days).
• If the water is cloudy, discoloured, or has small globules suspended in it, avoid all contact.
• Not all cyanobacterial blooms are visible to the naked eye and toxins can persist after the blooms disappear.
• Cyanobacterial concentrations can change quickly with changing environmental conditions (e.g., wind). If a health warning is in place avoid contact with the water.

For further details visit: www.lawa.org.nz/explore-data/canterbury-region/

Or contact Te Mana Ora on (03) 364 1777:

www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai:

www.cph.co.nz/wp-content/uploads/saf0112.pdf

For further information, contact:

communications@cdhb.health.nz

ENDS

Te Mana Ora | Community and Public Health has issued a health warning after potentially toxic blue-green algae (planktonic cyanobacteria) was found in Lake Hood.

People should avoid the lake and animals, particularly dogs, should not be allowed near the water until the health warning has been lifted.

The type of cyanobacteria that is currently present is Dolichospermum (formerly called Anabaena) which can be present as green globules floating in the water column or form surface scums or sheens.

Dr Cheryl Brunton, Medical Officer of Health for Te Mana Ora, National Public Health Service, says the algal bloom can produce toxins harmful to humans and animals.

“People should avoid contact with the water until further notice.”

“Exposure may cause skin rashes, nausea, stomach cramps, tingling and numbness around the mouth and fingertips. If you experience any of these symptoms visit your doctor immediately and please let your doctor know if you have had contact with the lake water”, Dr Brunton says.

No one should drink the water from the lake at any time. Boiling the water does not remove the toxin.

Animals that show signs of illness after coming into contact with algal mats or scums should be taken to a vet immediately.

Fish and shellfish can concentrate toxins and their consumption should be avoided. If fish are eaten, remove the gut and liver and wash in clean water.

Further information on gathering Mahinga Kai can be obtained below.

“When a bloom of potentially toxic cyanobacteria is present in a lake, there is a possibility of cyanobacteria and toxins being transported downstream.

“People are advised to avoid contact with the downstream water bodies,” says Dr Brunton.

Environment Canterbury monitors the lake weekly during summer and the public will be advised of any changes in water quality that are of public health significance.

Facts about cyanobacteria

• Cyanobacteria occur naturally but can increase rapidly during warmer months.
• Algal blooms are caused by a combination of nutrients in the water (such as nitrogen and phosphorus), and favourable weather conditions (e.g., increased temperature, calm days).
• If the water is cloudy, discoloured, or has small globules suspended in it, avoid all contact.
• Not all cyanobacterial blooms are visible to the naked eye and toxins can persist after the blooms disappear.
• Cyanobacterial concentrations can change quickly with changing environmental conditions (e.g., wind). If a health warning is in place avoid contact with the water.

For further details visit: www.lawa.org.nz/explore-data/canterbury-region/

Or contact Te Mana Ora on (03) 364 1777:

www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai:

www.cph.co.nz/wp-content/uploads/saf0112.pdf

For further information, contact:

communications@cdhb.health.nz

ENDS

Te Mana Ora | Community and Public Health has issued a health warning for the Waikirikiri-Selwyn River at Whitecliffs Domain.

The warning follows finding moderate to high cover of potentially toxic algae (benthic cyanobacteria) in the Waikirikiri-Selwyn River.

People should avoid the area and animals, particularly dogs, should not be allowed near the water until the health warning has been lifted.

There are also other access points along the Waikirikiri-Selwyn River that may have benthic cyanobacteria present. People are advised to treat every low-flowing river cautiously, check for the presence of benthic cyanobacteria and avoid contact.

Dr Cheryl Brunton, Medical Officer of Health for Te Mana Ora, National Public Health Service, says the algae look like dark brown to black mats and can produce toxins harmful to people and animals.

“Exposure may cause skin rashes, nausea, stomach cramps, tingling and numbness around the mouth and fingertips.”

“If you experience any of these symptoms, visit your doctor immediately, also let your doctor know if you’ve had contact with dark brown/black algal mats or water in this area”, Dr Brunton says.

Pets that show signs of illness after coming into contact with algal mats should be taken to a vet immediately.

People and animals should remain out of the waterways until the warnings have been lifted.

Environment Canterbury is monitoring the sites and the public will be advised of any changes in water quality.

Facts about cyanobacteria:

• Appears as dark brown/black mats attached to rocks along the riverbed.
• A low cover of the algae can occur naturally but can increase rapidly during warmer months. Algal blooms are influenced by a combination of available nutrients in the water and sediments (such as nitrogen and phosphorus), a sustained period of low and stable flows, and favourable weather conditions (e.g., increased temperature, calm days).
• It often has a strong musty smell and algal toxin concentrations can vary over short periods.
• Although high river levels will remove the algal bloom, detached mats can accumulate along the shore and increase the risk of exposure to toxins.
• If a health warning is in place avoid contact with the water.
• Although district or city councils may place warning signs, these may not be seen at the numerous river access points, hence the need for people/ dog-walkers to treat every low-flowing river cautiously.

For further details visit: www.lawa.org.nz/explore-data/canterbury-region/

Or contact Te Mana Ora on (03) 364 1777:

www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai:

www.cph.co.nz/wp-content/uploads/saf0112.pdf

For further information, contact:

communications@cdhb.health.nz

ENDS

If you thought planning and cooking a Christmas meal for the whānau was a big undertaking, spare a thought for Te Whatu Ora’s Canterbury WellFood team who are busy prepping for the more than 1000 Christmas meals they’ll be plating up for patients who find themselves in one of Canterbury’s hospitals on Christmas Day.

WellFood staff are also busy preparing ‘meals on wheels’ that will be served throughout the community on Christmas Day.

The Christmas menu across our hospitals is going to be a cracker.

For lunch at Christchurch Hospital, patients can choose from manuka smoked ham or a vegetable frittata, served with both potato and Greek salads with a dessert option of our classic pavlova with passionfruit and strawberry.

For dinner at Christchurch Hospital, patients can enjoy succulent roast chicken with stuffing and cranberry sauce served with new potatoes and steamed vegetables accompanied by steamed pudding with custard.

The Hillmorton campus Christmas lunch menu includes the options of glazed ham with mustard, roast chicken, or vegetarian strudel with baby carrots and peas and buttered potatoes and pavlova or fresh fruits for dessert. For dinner, patients can choose their own Christmas rolls with various filling options of assorted meats, falafel, and more.

“The festive season is a special time for many and it can be hard for patients and their families being in hospital and away from home on Christmas,” says Rachel Cadle, General Manager, Commercial Services.

“That’s why our teams across Canterbury work hard every year to create a very special menu for patients that will taste and feel just a little bit like home.”

Rachel Cadle says there will be around 70 staff working in the kitchens, as well as the catering assistants who take orders and serve the food in the hospital wards.

“The service we provide continues 365 days per year, without any let up in demand.”

“We haven’t forgotten the teams who will be working on Christmas Day either. Many of our hospital staff will be at work while their families are celebrating Christmas, so we have some special treats planned for them as well,” says Rachel Cadle.

ENDS

Te Mana Ora | Community and Public Health has issued a health warning for Rakahuri | Ashley River at Rangiora-Loburn Bridge.

The warning follows finding moderate to high cover of potentially toxic algae (benthic cyanobacteria) in the Rakahuri | Ashley River at Rangiora-Loburn Bridge.

People should avoid the area and animals, particularly dogs, should not be allowed near the water until the health warning has been lifted.

There are also other access points along the Rakahuri | Ashley River that may have benthic cyanobacteria present. People are advised to treat every low-flowing river cautiously, check for the presence of benthic cyanobacteria and avoid contact.

Dr Matt Reid, Medical Officer of Health for Te Mana Ora, National Public Health Service, says the algae look like dark brown to black mats and can produce toxins harmful to people and animals.

“Exposure may cause skin rashes, nausea, stomach cramps, tingling and numbness around the mouth and fingertips.”

“If you experience any of these symptoms, visit your doctor immediately, also let your doctor know if you’ve had contact with dark brown/black algal mats or water in this area”, Dr Matt Reid says.

Pets that show signs of illness after coming into contact with algal mats should be taken to a vet immediately.

People and animals should remain out of the waterways until the warnings have been lifted.

Environment Canterbury is monitoring the sites and the public will be advised of any changes in water quality.

Facts about cyanobacteria:

• Appears as dark brown/black mats attached to rocks along the riverbed.
• A low cover of the algae can occur naturally but can increase rapidly during warmer months. Algal blooms are influenced by a combination of available nutrients in the water and sediments (such as nitrogen and phosphorus), a sustained period of low and stable flows, and favourable weather conditions (e.g. increased temperature, calm days).
• It often has a strong musty smell and algal toxin concentrations can vary over short periods.
• Although high river levels will remove the algal bloom, detached mats can accumulate along the shore and increase the risk of exposure to toxins.
• If a health warning is in place avoid contact with the water.
• Although district or city councils may place warning signs, these may not be seen at the numerous river access points, hence the need for people/ dog-walkers to treat every low-flowing river cautiously.

For further details visit: https://www.lawa.org.nz/explore-data/canterbury-region/

Or contact Te Mana Ora on (03) 364 1777:

https://www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai:

https://www.cph.co.nz/wp-content/uploads/saf0112.pdf

ENDS

Media contact: communications@cdhb.health.nz

Stay cool and well this summer – Drink plenty of water, stay in cool places out of the sun, wear light, loose cotton clothing

Cantabrians are being urged to keep cool and hydrated during what looks set to be a stretch of scorching temperatures hitting the region this week.

Hot weather is forecast for Wednesday 20 December with temperatures predicted to get to a maximum of 30 degrees, with the heat set to reach 31 degrees on Thursday 21 December.

Dr Matt Reid, Canterbury Medical Officer of Health, says while we may welcome a run of hot weather the heat can affect us all and overheating is a condition that can prove fatal.

“It's especially important to stay out of the sun where possible, avoid extreme physical exertion, and ensure pets and people are not left alone in stationary cars.

“While we are all vulnerable to hot temperatures, some people are particularly at risk. This includes the elderly, infants and children, women who are pregnant, people suffering from chronic, acute and severe illness,” says Dr Reid.

There are some simple steps that we can all take to reduce the risk to our health when the temperatures are high. They include:

• Avoiding going outside during the hottest time of the day

• Drinking plenty of water and avoiding alcohol and caffeine

• Wearing lightweight, loose-fitting, light-coloured cotton clothes

Dr Matt Reid says people whose work involves strenuous physical activity outdoors should be particularly vigilant to avoid overheating in hot weather.

“It’s important people exposed to hot weather for long periods of time carry water with them and sip at least half a litre an hour, allow for more breaks in the shade, reapply sunscreen every two hours, and schedule the hardest work in the coolest part of the day.

“As well as being SunSmart (Slip, Slop, Slap & Wrap) if you have to go outside, everyone is advised to keep their houses cool by closing curtains on windows getting direct sun, opening windows to get a breeze if it's cooler out than in, and consider using the cool cycle on heat pumps,” says Dr Reid.

If it’s not possible to keep your home cool, you should look to spend a few hours of the day in a cool place e.g. an air-conditioned public building, Marae, or church, all of which tend to be cool in summer.

People should keep medicines below 25 degrees Celsius or in the refrigerator (read the storage instructions on the packaging).

If you feel dizzy, weak, or have an intense thirst or headache you may be dehydrated. Drink some water and rest in a cool place. If your symptoms persist or you’re concerned about your health, or someone else's, seek medical advice.

Remember you can call Healthline  24/7 for  free health advice on 0800 611 116.  If you need to be seen, they can tell you what to do and where to go if you need to be seen urgently.

And if you head to your local swimming spot to cool down, don’t forget to visit the ‘Can I Swim Here?’ section of the Land Water Aotearoa (LAWA) website at www.lawa.org.nz to view the latest information on where it’s safe to swim.

“A number of sites within Lyttelton and Akaroa Harbours, including popular spots like Akaroa Main Beach, Corsair Bay, Rāpaki Bay, Sandy Bay, Diamond Harbour Beach and Purau Beach, remain unsuitable for swimming due to the long-term grade and overall bacterial risk from contact with the water at these sites,” says Dr Reid.

“Temporary health warnings are also in place for other rivers and lakes in Canterbury, including the Waikirikiri-Selwyn River at Glentunnel and the Rakahuri/Ashley river at State Highway 1, due to toxic algal blooms. People and animals should remain out of the waterways until the warnings have been lifted.”

ENDS

For further information, contact: communications@cdhb.health.nz

Health Warning – Algal Bloom in the South Bank Tributary of the Waiau/Uwha River above the Waiau Bridge

Te Whatu Ora has issued a health warning for the South Bank Tributary of the Waiau /Uwha River above the Waiau Bridge.

The warning follows finding moderate to high cover of potentially toxic algae (benthic cyanobacteria) in a tributary of the Waiau/Uwha River.

People should avoid the area and animals, particularly dogs, should not be allowed near the water until the health warning has been lifted.

There are also other access points along the Waiau/Uwha River that may have benthic cyanobacteria present. People are advised to treat every low-flowing river cautiously, check for the presence of benthic cyanobacteria and avoid contact.

Dr Matt Reid, Canterbury Medical Officer of Health, National Public Health Service, says the algae look like dark brown to black mats and can produce toxins harmful to people and animals.

“Exposure may cause skin rashes, nausea, stomach cramps, tingling and numbness around the mouth and fingertips.”

“If you experience any of these symptoms, visit your doctor immediately, also let your doctor know if you’ve had contact with dark brown/black algal mats or water in this area,” Dr Matt Reid says.

Pets that show signs of illness after coming into contact with algal mats should be taken to a vet immediately.

People and animals should remain out of the waterways until the warnings have been lifted.

Environment Canterbury is monitoring the sites and the public will be advised of any changes in water quality.

Facts about cyanobacteria:

• Appears as dark brown/black mats attached to rocks along the riverbed.
• A low cover of the algae can occur naturally but can increase rapidly during warmer months. Algal blooms are influenced by a combination of available nutrients in the water and sediments (such as nitrogen and phosphorus), a sustained period of low and stable flows, and favourable weather conditions (e.g. increased temperature, calm days).
• It often has a strong musty smell and algal toxin concentrations can vary over short periods.
• Although high river levels will remove the algal bloom, detached mats can accumulate along the shore and increase the risk of exposure to toxins.
• If a health warning is in place avoid contact with the water.
• Although district or city councils may place warning signs, these may not be seen at the numerous river access points, hence the need for people/ dog-walkers to treat every low-flowing river cautiously.

For further details visit:

https://www.lawa.org.nz/explore-data/canterbury-region/

Or contact the Canterbury Public Health team on (03) 364 1777:

https://www.cph.co.nz/your-health/recreational-water/

For more information about Mahinga Kai:

https://www.cph.co.nz/wp-content/uploads/saf0112.pdf

ENDS

Media contact: communications@cdhb.health.nz