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Listeria Warning (New Update)

Published 25th January, 2013

NSW Health and the NSW Food Authority are reminding the elderly, people with weak immune systems and pregnant women to avoid risky foods, following a rise in cases of listeriosis over the past few weeks.

Further Cases of Listeria Identified

An ongoing national investigation has linked a further seven cases of listeria to soft cheeses.  There are now 18 cases of listeria infection nationally, including six in NSW, and a link to batches of Jindi manufactured cheeses sold at delicatessens and supermarkets has been identified.

The Jindi Cheese company is voluntarily recalling its cheeses from all batches it manufactured up until January 7.

Dr Lisa Szabo, Chief Scientist, NSW Food Authority, said that affected Jindi cheeses should either be discarded or returned to the retailer for a refund. Consumers should check the list of products or call the Jindi helpline on 1800 680 175, and are advised that the recalled Jindi foods should not be eaten.

Professor Lynn Gilbert, Clinical Lead, Infection Prevention and Control, Western Sydney Local Health District, said that at risk groups such as pregnant women and the elderly need to be aware of the recall. “Sadly, a woman in NSW has miscarried after contracting listeria.”

“Listeria is a bacteria that can affect a range of food products, particularly soft cheeses such as camembert and brie, despite strict hygiene and manufacturing controls,” Prof Gilbert said.

“The infection will cause minor or no symptoms in the vast majority of healthy people who may contract it, but is particularly dangerous for some vulnerable groups such as pregnant women and the elderly. Early symptoms of listeria include fever, headache, tiredness, aches and pains.”

NSW Health and the NSW Food Authority are reminding the elderly, people with weak immune systems and pregnant women to avoid risky foods, following a rise in cases of listeriosis over the past few weeks.

Eight cases of listeria infection were reported in NSW in December, compared with an average of three cases per month, of these none were fatal. Cases were aged between 64 and 90 years, and most had a condition associated with impaired immunity.  

Dr Jeremy McAnulty, Director of Health Protection NSW said the increase is concerning and may indicate that people at risk for this dangerous disease are not aware that some foods are potentially harmful to them. 

No common link has been identified in the recent cases.

"Listeriosis is an illness caused by eating food contaminated with bacteria called Listeria monocytogenes," Dr McAnulty said.

"Listeria infection is rare, but is particularly dangerous for pregnant women, their unborn babies and elderly people with lower immunity. It can cause miscarriages in pregnant women and death in people with weakened immune systems."

The NSW Food Authority advises those most at risk to avoid the following ready to eat foods:

  • soft cheese such as brie, blue, fetta, camembert and ricotta
  • cold chicken or turkey particularly if sliced  or diced – such as used in chicken sandwiches
  • cold meats, pate and meat spreads
  • pre-prepared or packaged salads greens and salads
  • raw seafood such as oysters, sashimi, smoked salmon or oysters (canned oysters are safe)
  • sushi unpasteurised dairy products including raw goat’s milk and Roquefort cheese

"Signs of listeriosis include flu-like symptoms such as fever, muscle aches, nausea and diarrhoea that can sometimes lead to septicemia, meningitis and in some cases, miscarriage in pregnant women," Dr McAnulty said.

Investigations into listeriosis are complex as it can be difficult to identify the source. Symptoms of illness can take up to 70 days to appear.

Healthy people usually show only mild symptoms. However, in people at risk, early symptoms of listeria infection include fever, headache, tiredness and aches and pains.

Information about listeria can be found on the NSW Health website. The NSW Food Authority also has information about what foods to avoid.

Published 25th January, 2013
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