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Listeria monocytogenes outbreak (Archive)

Update: August 27, 2008 - 16:00 (EST)

The Public Health Agency of Canada (PHAC) continues to collaborate with provincial and local health authorities in Quebec, Ontario, Saskatchewan and British Columbia, Health Canada and the Canadian Food Inspection Agency (CFIA) to investigate an increase in cases of Listeriosis with the same genetic fingerprint (strain).

The following table indicates the latest number of confirmed and suspected cases of Listeriosis broken down by province.

Confirmed and suspected cases:

Province

Confirmed Cases

Suspected Cases

Ontario

22

18

BC

4

0

Alberta

0

5

Saskatchewan

1

0

Manitoba

0

1

Quebec

2

8

Total

29

31

 

The following table indicates, of the confirmed cases, the number of deaths where Listeriosis was the underlying or contributing cause, and the number of deaths currently under investigation.

Province

Deaths where Listeriosis was the underlying or contributing cause

Deaths under investigation

Ontario

5*

7

BC

0

1

Alberta

0

0

Saskatchewan

0

1

Quebec

0

1

Total

5

10

* The number of deaths where listeriosis was an underlying or contributing cause in Ontario has been reduced from 6 to 5.  This is because one of the deaths in that category has been reclassified as being "cause is undetermined" as the cause of death is being further investigated by one of Ontario's local public health units.

For most people, the risk posed by listeria is very low.  Healthy people who are exposed to listeria are rarely affected by the bacteria.  However, there are certain people who are at higher risk for listeriosis – the very young, the very old, pregnant women, and people with weakened immune systems.

People from these at-risk groups who may have eaten contaminated products and have experienced symptoms, such as persistent fever, severe headaches, neck stiffness, nausea and vomiting, should consult their health care provider.

We recommend that those at greater risk take precautionary measures when preparing food by avoiding the recalled products, avoiding raw, unpasteurized milk and dairy. products, and ensuring that raw vegetables are washed thoroughly before they are eaten.

Media Enquiries:

Public Health Agency of Canada
Philippe Brideau, Media Relations
(613) 948-7970

Canadian Food Inspection Agency
Media Relations
(613) 228-6682