I am writing this piece on the 19th October; things may change and
therefore advice will change. It is vital that you keep up-to-date as
the virus spreads westwards and the ideal place for finding advice pertinent
to UK birds is the official DEFRA website, www.defra.gov.uk
At the time of writing the H5N1 strain of
avian influenza has been confirmed in Greece, Romania and Turkey so
it is still quite a long way off. The major risk to the UK is via migratory
birds, especially waterfowl. We therefore advise the following:
1. Migrant birds have the potential to bring
in avian influenza virus every year yet UK outbreaks in captive birds
are uncommon.
2. The chances are slightly higher this year
owing to the known proximity of the virus.
3. The major risk is from migratory waterfowl.
Therefore it is sensible to move captive birds away from lakes/ ponds
where migratory waterfowl may congregate. There appears no immediate
need to cover aviaries
4. The reason for the additional fears with
this strain is that it has infected and killed 60 people in Asia. It
is possible that one case was human-human though this is not certain.
However, contact with birds must be very close for this to occur. Therefore
risk to the public from aviary birds is low. Precautions should, however,
be considered for keepers entering aviaries or handling birds with additional
measures considered for stopping public contact with birds (walk-through
aviaries, handling birds, etc) should the virus enter the UK.
I can see no reason to contemplate closing whole parks to the public.
While the press speculate on ‘flu pandemics, the virus will have
to mutate to allow easy human-human spread while still maintaining its
virulence; this is a big ask.
5. The role of vaccination in exotic bird species
needs further evaluation and, at present, cannot be done without EU
permission. Vaccination, like infection, produces antibodies to the
virus. If the birds are not vaccinated then it will be much easier for
the authorities to track progress of the virus, especially as, in the
early stages, a slaughter policy may be implemented
6. At the moment contingency plans for the points
in (4) should be drawn up and reviewed as
a. The virus enters
the UK
b. The virus becomes
widespread in UK wild birds
7. In the meantime, normal good biosecurity
practices should be implemented and maintained.
We are asked to be extra vigilant with respect to wild birds falling
sick. While the odd single bird becoming sick is extremely unlikely
to be linked to avian influenza virus, it is important that deaths of
several birds in an area are reported. To help with this there is a
DEFRA helpline, 08459 335577. If in doubt please ring this number
John Chitty BVetMed CertZooMed MRCVS