Category: Population Health

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Cyanobacteria health warning lifted from Lake Rotokauri

Source: Waikato District Health Board

The Public Health warning issued for Lake Rotokauri at the beginning of the year has been lifted today by National Public Health Service (NPHS), after subsequent tests showed that cyanobacterial levels are below the warning level.

Lakes Rotoroa (Hamilton Lake), Hakanoa, Waikare, Whangape and Kainui continue to have a cyanobacterial health warning in place, while this warning is extreme at Lake Ngā Roto.

Medical Officer of Health Dr Richard Wall recommends that for lakes with a health warning in place, “people should avoid any activity in or near these lakes that could lead to skin contact with the affected water, or the water being swallowed.”

“Toxins released by cyanobacteria can trigger asthma and hayfever symptoms, skin rashes, stomach upsets, and neurological effects such as tingling around the mouth, headaches, breathing difficulties and visual problems.”

The symptoms may not appear until sometime after contact with affected water.

“If you do come into contact with water at lakes when warnings are in place or where there were visible changes in water colour, shower and change your clothing as soon as possible afterwards, even if you do not have symptoms,” adds Dr Wall.

“If you feel unwell after coming in contact with the lake you should seek health advice from your doctor or by calling Healthline on 0800 611 116. Please also report it to the NPHS Waikato office on (07) 838 2569.”

Scums formed by algal blooms are a particular risk because they contain a high level of toxins. If contact with scum does occur, skin should be rinsed clean and clothing changed as soon as possible.

“It’s particularly important for parents to keep an eye on children if you’re down at the water as these scums can form at the edge of the lake and children will sometimes play with them.”

Dog owners should prevent their dogs from drinking or swimming in the water, or eating algal bloom scum as dogs are particularly sensitive to cyanobacteria and could become seriously ill.

To check if recreational water spots near you are safe for swimming and playing in visit https://www.lawa.org.nz/explore-data/waikato-region/. Information is also available from Waikato Regional Council at https://www.waikatoregion.govt.nz/environment/water/algal-blooms/

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CYANOBACTERIAL WARNING UPDATE: Health warning lifted for Lake Ngā Roto

Source: Waikato District Health Board

CYANOBACTERIAL WARNING UPDATE: Health warning lifted for Lake Ngā Roto, and remains in place for Lakes Rotoroa (Hamilton Lake), Waikare, Hakanoa, Rotokauri, Whangape and Kainui.

The Public Health warning issued on 7th November 2023 for Lake Ngā Roto has now been lifted after subsequent tests showed that cyanobacterial levels are below the warning level. Lakes Rotoroa (Hamilton Lake), Waikare, Hakanoa, Rotokauri, Whangape and Kainui continue to have a cyanobacterial health warning in place.

Dr Richard Wall, Health New Zealand – Te Whatu Ora Medical Officer of Health for Waikato recommends that where cyanobacteria health warnings are in place, lakes should not be used for any activity that involves skin contact with the affected water.

“Swallowing water from lakes affected by blooms should also be avoided,” said Dr Wall.

Cyanobacteria can release toxins which can trigger asthma and hayfever symptoms, and can cause skin rashes, stomach upsets, and in some cases neurological effects such as tingling around the mouth, headaches, breathing difficulties and visual problems.

These symptoms may not appear until some time after contact with the affected water.

Scums are a particular risk because they contain a high level of toxins.  If contact with scum does occur, skin should be rinsed clean and clothing changed as soon as possible. This warning is particularly important for children.”

“If people do come into contact with the lake when warnings are in place, or any other lake where there are visible changes to water colour, they should shower and change their clothing as soon as possible afterwards, even if no symptoms are noticeable,” he said.

Dog owners should prevent their dogs from drinking or swimming in the water, as dogs are particularly sensitive to cyanobacteria.

Health NZ would like to be informed about health problems that develop after exposure to any of the Waikato lakes.

Up-to-date information on cyanobacterial cell counts is available by visiting the Land Air Water Aotearoa (LAWA) website at https://www.lawa.org.nz/explore-data/waikato-region/

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South Waikato Hauora day sets new benchmark for community wellbeing

Source: Waikato District Health Board

An event taking health and wellbeing in the community to the next level is how a South Waikato Hauora day is being described by Health New Zealand – Te Whatu Ora Waikato.

Chief Medical Officer – Primary Care, Dr Julia Carr said the South Waikato Hauora (wellbeing) Day held at Tokoroa Hospital on 9 March was co-ordinated by the South Waikato Pacific Islands Community Services Trust (SWPICS).

“This day provided a unique opportunity for Health NZ staff to combine with trusted, local primary care providers and our secondary colleagues to offer vaccinations, screening and information services to the community, in the setting of the community’s rural hospital.

“The generous and collaborative effort of all involved resulted in a welcoming atmosphere, and the uptake of services was really heartening to see.

“These events usually involve several of our screening and immunisation services teaming up with local providers but Saturday’s real point of difference was some people attending the Hauora day were able to attend outreach specialist clinics and undergo elective surgical procedures on site.”

This had been able to be done by identifying people in the community who were on the surgery waiting list and getting them seen.

The elective procedures conducted in Tokoroa Hospital’s Outpatients Clinic on the day were minor surgical procedures performed by Mr Jasen Ly in a PR Bleeding Clinic set up on behalf of the Braemar Charitable Trust which owns Hamilton’s Braemar Hospital.

Trust manager Paula Baker said the organisation runs and funds a wide range of activities aimed at boosting health outcomes across the Waikato.

“Eight patients who had been on the public waiting list were able to receive treatment from Mr Ly or where needed, be referred for additional specialist care at the Hauora day which is great news,” she said.

Dr Stephen Ng and a team from Waikato Hospital provided vision screening for cataracts & keratoconus and pre-assessments for cataract surgery- a new model of care to improve access for surgery for people from disadvantaged communities in Waikato regions.

In all 82 people were screened by Stephen’s team and 18 people seen by the on-site clinic, 15 of whom were able to be pre-assessed for cataract surgery within the next three months.

SWPICS Chief Executive Akarere Henry said those procedures as well as vaccinations, screening services and general health and wellbeing advice shared with the 500-600 members of the public that visited the Hauora day were all part of a larger plan.

“One of the challenges of rural communities is ‘access.’ This initiative sought to reduce the inequities impacting our communities by deploying outreach health services to reduce barriers to health care for priority populations in the South Waikato.

“As a community provider we’re extremely grateful for the willingness of all partners to work collectively and demonstrate the better utilisation of resources within the one space. SWPICS is deeply honoured to have been able to coordinate this day and bring about its success because it is what the community wants.”

Both Akarere and Julia said it is hoped Saturday’s event will be the first of many such initiatives where the shared outcomes of placing whānau /aiga / kopu tangata (family) at the heart, is tangibly seen and felt.

Services provided by the participating 12 agencies included:

·         Body Mass Indexing

·         Blood Pressure reading

·         Cataract assessment

·         Keratoconus

·         PR Bleeding Clinic

·         Bowel Screening

·         Breast Screening

·         Stop Smoking support

·         Mental Health/ Korero Mai

·         Maternity Services

·         Child Immunisations

·         Cervical Screening

·         AWHI Healthy Homes

·         Drive through vaccines

·         Oral Health

For further information:
Akarere Henry, Chief Executive South Waikato Pacific Islands Community Services Trust 0272400043
Email:  ceo@swpics.nz

Paula Baker, Braemar Charitable Trust Manager
Email: PaulaB@braemartrust.co.nz

Caption: SWPICS CEO Akarere Henry left, with Health New Zealand Regional Pacific Lead, Tamati Peni at the Hauora day.

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CYANOBACTERIAL WARNING UPDATE: Health warning issued for Lake Rotokauri and Lake Rotoroa (Hamilton Lake)

Source: Waikato District Health Board

CYANOBACTERIAL WARNING UPDATE: Health warning issued for Lake Rotokauri and Lake Rotoroa (Hamilton Lake) and remains in place for Lakes Ngā Roto, Hakanoa, Waikare and Kainui.

A new health warning has been issued today for Lakes Rotokauri and Rotoroa (Hamilton Lake) due to a rise in cyanobacteria biovolume to 1.85 mm3/L at Lake Rotokauri and 3.6 mm3/L at Lake Rotoroa (Hamilton Lake). Biovolume is the measure used to decide when a health warning should be issued, with the cut-off value for a health warning set at 1.8mm3/L.

Lakes Ngā Roto, Hakanoa, Waikare and Kainui continue to have a cyanobacterial health warning in place.

Waikato Regional Council monitors cyanobacteria levels at Lakes Kainui, Rotokauri, Ngā Roto, Puketirini, Waikare, Whangape, Hakanoa and Waahi.

Dr Richard Wall, Te Whatu Ora Medical Officer of Health for Waikato recommends that where cyanobacteria health warnings are in place, lakes should not be used for any activity that involves skin contact with the affected water.

“Swallowing water from lakes affected by blooms should also be avoided,” said Dr Wall.

“If people still choose to use the lakes when warnings are in place, or any other lake where there are visible changes to water colour, they should shower and change their clothing as soon as possible afterwards, even if no symptoms are noticeable,” he said.

Cyanobacteria can release toxins which can trigger asthma and hayfever symptoms, and can cause skin rashes, stomach upsets, and in some cases neurological effects such as tingling around the mouth, headaches, breathing difficulties and visual problems.

These symptoms may not appear until some time after contact with the affected water.

Scums are a particular risk because they contain a high level of toxins.  If contact with scum does occur, skin should be rinsed clean and clothing changed as soon as possible. This warning is particularly important for children.

Dog owners should prevent their dogs from drinking or swimming in the water, as dogs are particularly sensitive to cyanobacteria.

Te Whatu Ora Public Health Unit for Waikato would like to be informed about health problems that develop after exposure to any of the Waikato lakes. Phone Waikato Public Health Service: 07 838 2569.

Up-to-date information on cyanobacterial health warnings  is available by visiting the Land Air Water Aotearoa (LAWA) website at https://www.lawa.org.nz/explore-data/waikato-region/

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CYANOBACTERIAL WARNING UPDATE: Significant rise of cyanobacterial levels for Lake Ngā Roto

Source: Waikato District Health Board

Cyanobacterial levels at Lake Ngā Roto have risen to extremely high levels this week, with a consequential increase in health risk to the public. The cyanobacteria biovolume is 123mm3/L compared to the New Zealand guideline level of 1.8mm3/L.

A health warning was issued for Lake Ngā Roto on 8 November 2023. The Te Whatu Ora Waikato Public Health Service is issuing this update to warn people of this significant increase in cyanobacterial levels.

Cyanobacterial bloom at Lake Ngā Roto – image courtesy of Mark Palmer

“We strongly recommend that people avoid any recreational activities that involves contact with the water” says Dr Richard Wall, Medical Officer of Health for Waikato. “People using boats are also advised to stay off the lake, because of the risk of contact with the water”.

The predominant cyanobacterial species present in the lake is a type that is known to produce toxins in New Zealand, which can cause serious illness. The cyanobacterial bloom extends to most parts of the

lake, and is not restricted to the edges of the lake. However, scums may accumulate along the shoreline and are a particular risk as they may contain particularly high levels of toxins.

Cyanobacterial toxins can trigger asthma and hayfever symptoms, can cause skin rashes, stomach upsets, and in some cases neurological effects such as tingling around the mouth, headaches, breathing difficulties and visual problems.

These symptoms may not appear until some time after contact with the affected water. Long-term exposure to cyanobacterial toxins may cause additional health risks.

If contact with water does occur, skin should be rinsed clean and clothing changed as soon as possible.

Dog owners should prevent their dogs from drinking or swimming in the water, as dogs are particularly sensitive to cyanobacteria.

Te Whatu Ora Public Health Unit for Waikato would like to be informed about health problems that develop after exposure to any of the Waikato lakes. Phone Waikato Public Health Service: 07 838 2569.

Lakes Hakanoa, Waikare and Kainui continue to have a cyanobacterial health warning in place.

Up-to-date information on cyanobacterial risk is available by visiting the Land Air Water Aotearoa (LAWA) website at https://www.lawa.org.nz/explore-data/waikato-region/

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CYANOBACTERIAL WARNING UPDATE: Health warning lifted for Lake Rotoroa (Hamilton Lake)

Source: Waikato District Health Board

CYANOBACTERIAL WARNING UPDATE: Health warning lifted for Lake Rotoroa (Hamilton Lake) and remains in place for Lake Ngā Roto, Hakanoa, Waikare and Kainui.

The Public Health warning issued on 5 October 2023 for Lake Rotoroa (Hamilton Lake) has now been lifted, after subsequent tests showed that cyanobacterial levels to be once again below the warning level. Lakes Ngā Roto, Hakanoa, Waikare and Kainui continue to have a cyanobacterial health warning in place.

Waikato Regional Council monitors cyanobacteria levels at Lakes Kainui, Rotokauri, Ngā Roto, Puketirini, Waikare, Whangape, Hakanoa and Waahi.

Dr Felicity Dumble, Te Whatu Ora Medical Officer of Health for Waikato recommends that where cyanobacteria health warnings are in place, lakes should not be used for any activity that involves skin contact with the affected water.

“Swallowing water from lakes affected by blooms should also be avoided,” said Dr Dumble.

Cyanobacteria can release toxins which can trigger asthma and hayfever symptoms, and can cause skin rashes, stomach upsets, and in some cases neurological effects such as tingling around the mouth, headaches, breathing difficulties and visual problems.

These symptoms may not appear until some time after contact with the affected water.

Scums are a particular risk because they contain a high level of toxins.  If contact with scum does occur, skin should be rinsed clean and clothing changed as soon as possible. This warning is particularly important for children.”

“If people do come into contact with the lake when warnings are in place, or any other lake where there are visible changes to water colour, they should shower and change their clothing as soon as possible afterwards, even if no symptoms are noticeable,” she said.

Dog owners should prevent their dogs from drinking or swimming in the water, as dogs are particularly sensitive to cyanobacteria.

Te Whatu Ora Public Health Unit for Waikato would like to be informed about health problems that develop after exposure to any of the Waikato lakes.

Up-to-date information on cyanobacterial cell counts is available from local councils, Waikato Regional Council or by visiting the Land Air Water Aotearoa (LAWA) website at https://www.lawa.org.nz/explore-data/waikato-region/

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CYANOBACTERIAL WARNING UPDATE: Health warning lifted for Lake Whangape

Source: Waikato District Health Board

CYANOBACTERIAL WARNING UPDATE: Health warning lifted for Lake Whangape and remains in place for Lakes Rotoroa (Hamilton Lake), Ngā Roto, Hakanoa, Waikare and Kainui.

The Public Health warning issued on 7 July 2021 for Lake Whangape has now been lifted, after subsequent tests showed that cyanobacterial levels to be once again below the warning level. Lakes Rotoroa (Hamilton Lake), Ngā Roto, Hakanoa, Waikare and Kainui continue to have a cyanobacterial health warning in place.

Waikato Regional Council monitors cyanobacteria levels at Lakes Kainui, Rotokauri, Ngā Roto, Puketirini, Waikare, Whangape, Hakanoa and Waahi.

Dr Felicity Dumble, Te Whatu Ora Medical Officer of Health for Waikato recommends that where cyanobacteria health warnings are in place, lakes should not be used for any activity that involves skin contact with the affected water.

“Swallowing water from lakes affected by blooms should also be avoided,” said Dr Dumble.

Cyanobacteria can release toxins which can trigger asthma and hayfever symptoms, and can cause skin rashes, stomach upsets, and in some cases neurological effects such as tingling around the mouth, headaches, breathing difficulties and visual problems.

These symptoms may not appear until some time after contact with the affected water.

Scums are a particular risk because they contain a high level of toxins.  If contact with scum does occur, skin should be rinsed clean and clothing changed as soon as possible. This warning is particularly important for children.”

“If people do come into contact with the lake when warnings are in place, or any other lake where there are visible changes to water colour, they should shower and change their clothing as soon as possible afterwards, even if no symptoms are noticeable,” she said.

Dog owners should prevent their dogs from drinking or swimming in the water, as dogs are particularly sensitive to cyanobacteria.

Te Whatu Ora Public Health Unit for Waikato would like to be informed about health problems that develop after exposure to any of the Waikato lakes. Phone Waikato Public Health Service: 07 838 2569.

Up-to-date information on cyanobacterial cell counts is available from local councils, Waikato Regional Council or by visiting the Land Air Water Aotearoa (LAWA) website at https://www.lawa.org.nz/explore-data/waikato-region/