Is it safe to eat poultry from areas affected by avian influenza?
27 -Jun-2004 (HEALTH
CANADA)
Is it safe to eat poultry from areas affected by avian influenza?
There is no public health risk associated with the consumption of cooked
poultry meat or eggs as a result of these cases.
Health Canada advises that poultry products and eggs from areas experiencing
an outbreak of avian flu do not pose a risk to human health for avian flu.
The virus is known to be killed at temperatures above 72ºC, however, Health
Canada recommends cooking whole poultry to 85ºC and other poultry products
and eggs to 74ºC to ensure microbial
food safety.
What is avian influenza?
Avian influenza is a contagious viral infection that can affect all species
of birds (chickens, turkeys, guinea fowl, pet birds and wild birds). In
intensive poultry rearing systems, young fattening turkeys and laying hens
are usually the most affected species.
Wild birds may carry influenza viruses without becoming ill due to natural
resistance. Wild waterfowl present a natural reservoir for these viruses and
can be responsible for the primary introduction of infection into domestic
poultry. Signs of the disease range from a mild infection with no symptoms
to a severe epidemic that kills up to 100 percent of infected birds.
Is avian influenza transmissible to humans?
In rare instances people can contract avian flu. To date, the H5N1, H7N7 and
H9N2 subtypes of the avian influenza virus have been known to cause illness
in people, with H5N1 associated with the most serious illness in humans.
To date, two people have been infected with avian influenza. Both cases of
infection followed close contact with infected poultry and contaminated
materials and resulted in mild symptoms. Both people have fully recovered.
Are more cases of human illness possible?
The culling operation in British Columbia (Canada) is an extensive one so it
is likely that we'll see more confirmed infections. Given this possibility,
antiviral drugs are recommended for workers in contact with infected
chickens or contaminated materials. Health Canada has provided occupational
health and safety advice to the CFIA. Currently, workers must have received
the current flu vaccine and antivirals and training on the use of personal
protective equipment before working with the high risk flocks.
Has the H7 virus ever infected humans?
Most recently, the H7N2 virus was detected in poultry in Delaware and did
not cause illness in humans. An outbreak of H7N7 in the Netherlands in 2003
resulted in one death and over 80 cases of mild disease in people. The vast
majority of these cases exhibited conjunctivitis, and some of them displayed
mild influenza-like illness.