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The last year or so there has been a lot of
information and misinformation about Avian Influenza. We
hope that with the facts and information we provide
below, some of the fears about the H5N1 Avian
Influenza can be calmed. In particular we provide
information on how pigeons may or may not be affected by
A.I. and the measures that are in place by the Racing
Pigeon, Show and Fancy Pigeon Organization in full
co-operation with the Canadian Food Inspection Agency.
Avian Influenza and Pigeons.
As you are aware, the world is being flooded with
daily reports of Avian Influenza, one of the latest of
which cites a finding of the H5 serotype in wild ducks
in Quebec (28), Manitoba(5) and British Columbia (?).
This has become quite a concern for our neighbors and
therefore our members and executive. Because of the
misinformation that is circulating or maybe lack of
proper information, our neighbors and the community in
general have begun to look at pigeons as possible
sources of infection to themselves or their families.
This is not the case.
Over a number of years, several scientific studies,
some of them done in Canada, have shown that pigeons are
generally resistant to Avian Influenza viruses. More
recently in 1996, Dr B Panigrahy and co-workers of the
National Veterinary Services Laboratory, USDA in Ames
Iowa, showed that pigeons were resistant or only
slightly susceptible to Highly Pathogenic or Low
Pathogenic Avian Influenza viruses. In 2002, Drs Laura
Perkins and David Swayne of the Southeast Poultry
Research Laboratory, USDA/ARS in Athens Georgia,
reported that 4-week-old pigeons – some of which were
infected with circovirus which severely damages the
immune system – did not develop signs of illness and did
not shed virus at any time after they were inoculated
with a Highly Pathogenic H5 Avian Influenza virus.
A published report from Germany in 2004 showed that
pigeons play only a very minor role in H5 infections.
In the summer of 2005, Dr. Swayne indicated by Email
that even following direct inoculation of pigeons with a
strain of the Highly Pathogenic H5N1 virus, only limited
infections occurred in these pigeons. Dr Swayne did note
that die offs in pigeons do occur and that the cause
most likely is Paramyxovirus, but observers are likely
to blame Avian Influenza. Remember to vaccinate against
Paramyxovirus to protect your loft (it is still here).
On the basis of this scientific information, it is
unlikely that pigeons will have any impact on influenza
infections in humans. The primary species that have
natural infections, as you and your community have all
heard, are wild ducks and geese.
What do we need to know?
THE FACTS!!!!!
Regarding the afore-mentioned findings in ducks from
Quebec, Manitoba and British Columbia, the CFIA noted
that the positive findings were due to an H5 subtype but
the N type has to be determined as of November 1, 2005.
The detection of the H5 subtype was not unexpected – the
virus is common in migratory birds around the world and
various types and strains have been found in North
America over the last 30 years, with no impact on human
health. Otherwise, this is nothing new.
The Public Health agency of Canada has determined that
there is no information in these findings that suggest a
threat to human health.
What Else?
Here are a few facts from a news release from The US
Department of Health and Human services, Centers for
Disease Control and Prevention.
What is bird flu – This is an infection called Avian
Influenza that occurs naturally in birds. Wild birds
worldwide carry the infection in their intestines, but
usually don’t get sick. However it is very contagious
and can make some domestic birds such as chickens,
turkeys and ducks sick and in some cases cause high
mortality.
Do bird flu virus infect
humans?
Bird flu viruses do not usually infect humans, but in
a few cases they have caused some flu like symptoms.
What is the risk to humans
from Bird Flu?
The risk is generally low to most people because the
virus occurs mainly among birds and does not usually
infect humans. However, during an outbreak in
domesticated poultry, there is a possible risk to people
who have direct contact with the infected birds or
surfaces contaminated with excretions from infected
birds. This is what has happened in Asia with the
outbreak of H5N1 virus we keep hearing about. In the
recent outbreak in BC, eye infections occurred in some
workers who were closely associated with infected
chickens.
The bottom line is we have to be just as concerned
about public opinion as we are about the health of our
birds when it comes to Avian Influenza. We have to be
good ambassadors to our neighbors and community and give
them the answers they need, the truth. We must maintain
the health of our flocks to avoid compromising their
ability to resist infections such as Avian Influenza.
Keep them clean and healthy.
If the Highly Pathogenic H5N1 strain of virus now
present in Europe, or any other high path serotype that
CFIA calls for quarantine, should ever infect poultry in
Canada, we need to co-operate locally and possibly
nationally, in a complete LOCKDOWN of our birds – no
loft exercise, no access to aviaries, no loft visits or
exchanges of birds, no shows, no visits to poultry farms
or live poultry markets – and if it comes to it, no
racing! Our birds can live to race another day! Not only
do we need to co-operate fully, but we also have to be
SEEN to co-operate. As an example that worked well in
preventing Avian Influenza, in the summer of 2005, the
Dutch government ordered the complete lockdown of their
poultry flocks to avoid exposure to migratory birds.
We are posting the complete information sheet from
the US Centers for Disease Control and Prevention on our
website. Please take time to read it if you need more
information.
Sincerely,
Dr. Gord Chalmers & Tom Cosstick
CRPU Health Committee
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