Shellfish and seawater samples around New Zealand are tested each week to ensure they are not contaminated with biotoxin from blooms of algae. Public warnings are issued when shellfish are not safe to eat. This page contains information relating to the non-commercial (recreational and traditional) taking of shellfish only.
This page is updated as soon as new information comes to hand. All the warnings on this page are current and remain in force.
The Waikato District Health Board today issued a public health warning advising the public not to collect or consume shellfish harvested from the coastal area of the western Coromandel Peninsula, from the east bank of the Waihou River north to Wilson Bay on the Thames Coast.
Routine tests on shellfish samples taken from the Firth of Thames have shown levels of Diarrhetic Shellfish Poisoning (DSP) at 0.21 mg/kg. This is above the Ministry of Health's safe limit of 0.16 mg/kg. Anyone eating shellfish from this area are potentially at risk of illness.
Kina, mussels, toheroa, pipis, scallops, tuatua, oysters and cockles in the affected area should not be eaten.
Cooking shellfish does not remove the toxin.
Paua, crab and crayfish may still be eaten if the gut has been completely removed prior to cooking, as toxins accumulate in the gut. If the gut is not removed its contents could contaminate the meat during the cooking process.
Symptoms of DSP are diarrhoea, nausea, vomiting and abdominal pain, and usually occur within 12 to 24 hours of eating shellfish.
If anyone becomes ill after eating shellfish from an area where a public health warning has been issued they should contact a doctor immediately, advise their local Public Health Unit and keep any left over shellfish.
Monitoring of toxin levels will continue and any changes will be communicated accordingly.
Up-to-date information on the toxic shellfish health warning can be found through these channels:
Shellfish and seawater samples around New Zealand are tested each week to ensure they are not contaminated with biotoxin from blooms of algae. Public warnings are issued when shellfish are not safe to eat. This page contains information relating to the non-commercial (recreational and traditional) taking of shellfish only.This page is updated as soon as new information comes to hand. All the warnings on this page are current and remain in force.The Waikato District Health Board today issued a public health warning advising the public not to collect or consume shellfish harvested from the coastal area of the western Coromandel Peninsula, from the east bank of the Waihou River north to Wilson Bay on the Thames Coast.Routine tests on shellfish samples taken from the Firth of Thames have shown levels of Diarrhetic Shellfish Poisoning (DSP) at 0.21 mg/kg. This is above the Ministry of Health's safe limit of 0.16 mg/kg. Anyone eating shellfish from this area are potentially at risk of illness.Kina, mussels, toheroa, pipis, scallops, tuatua, oysters and cockles in the affected area should not be eaten.Cooking shellfish does not remove the toxin.Paua, crab and crayfish may still be eaten if the gut has been completely removed prior to cooking, as toxins accumulate in the gut. If the gut is not removed its contents could contaminate the meat during the cooking process.Symptoms of DSP are diarrhoea, nausea, vomiting and abdominal pain, and usually occur within 12 to 24 hours of eating shellfish.
If anyone becomes ill after eating shellfish from an area where a public health warning has been issued they should contact a doctor immediately, advise their local Public Health Unit and keep any left over shellfish.
Monitoring of toxin levels will continue and any changes will be communicated accordingly.
Up-to-date information on the toxic shellfish health warning can be found through these channels:
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