Gastroenteritis and food poisoning are a public health concern

Acute gastroenteritis is a highly contagious disease that many of us have experienced. Community and Public Health has a role in investigating cases of gastroenteritis especially if groups of people are affected at the same time.

Sources and Symptoms of Acute Gastroenteritis

Sick young woman clutching her stomach in pain or discomfort.Acute gastroenteritis is caused by bacteria, viruses, parasites or chemicals and can be spread in the following ways:

  • Ingesting contaminated food (food poisoning) or
  • Ingesting contaminated water or
  • From animals or
  • Direct from one person to another person or
  • From contaminated objects in the environment.

The common symptoms of diarrhoea, vomiting and stomach cramps are caused by the digestive system being inflamed. These symptoms can last from a few hours, days, weeks or months depending on the cause.

What to Do if You Think You Have Food Poisoning

If you think you have food poisoning, call the Communicable Disease Team at Community and Public Health. A staff member will complete a questionnaire with you over the phone. The information is assessed to determine the likely source and cause of your illness. You may need to provide poo samples (and food specimens if available) to assist in the investigation.

Most people think the last food they ate is the cause of their illness, and this is not always true. Community and Public Health may follow up food poisoning cases where a food premise, event or location is implicated. Further investigation is then carried out and the local Council and/or Ministry for Primary Industries (Food Safety Section) notified of an issue if needed.

Dealing with Gastroenteritis Outbreaks in Rest Homes

Cases of acute gastroenteritis caused by Norovirus are increasing in elderly care facilities like rest homes in New Zealand. These institutional outbreaks are concerning since the illness can quickly spread and the residents/patients are at greater risk of being seriously affected. Community and Public Health staff are committed to assisting rest homes deal with these infectious diseases when they happen and providing guidance to limit their impact on both staff and residents.

If a rest home suddenly experiences an increase in diarrhoea or vomiting, staff need to act quickly by taking the following steps:

  • Seek infection control advice from an Infection Control Nurse at a Community Laboratory
  • Contact the Communicable Disease Team at Community and Public Health to notify the outbreak to the Medical Officer of Health
  • Download the following two forms. Fax the completed forms to Community and Public Health at the end of the outbreak.

The Communicable Disease Team is able to provide further advice or assistance if needed.


Documents

Downloads

Download or order resources from the Community Health Information Centre.

Links

Contact the Communicable Disease staff at your local office for further information:

CANTERBURY
Ph: +64 3 364 1777
Fax: +64 3 379 6484

SOUTH CANTERBURY
Ph: +64 3 687 2600
Fax: +64 3 688 6091

WEST COAST
Ph: +64 3 768 1160
Fax: +64 3 768 1169

Page last updated: 09/03/2017

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