Page 15 - National Poultry Newspaper

Britian hit by its largest avian influenza outbreak
WITH 36 confirmed outbreaks in Britain in mid-December, Farm- ing and Environment Minister George Eustice told the UK Parliament recently that the coun- try was having its worst ever occurrence of avian influenza and that such outbreaks were a season- al risk associated with migratory wild birds.
All birds on infected premises were culled.
poultry products includ- ing eggs are safe to eat.
tory swab was taken from the case on December 24, 2021 which tested posi- tive for influenza A with subtyping H5.
Concurrently, Britain's chief vet Christine Mid- dlemiss told BBC Radio that around 500,000 birds had been culled as a result of the outbreaks.
The virus has been spreading across Europe over the past few weeks with outbreaks in sev- eral countries including France, Germany, Italy, the Netherlands and Den- mark.
The case lived with a large number of domes- tically kept birds which had onset of illness on December 18, 2021 and subsequently tested posi- tive with Highly Patho- genic Avian Influenza A(H5N1) by the United Kingdom National Refer- ence Laboratory at the Animal and Plant Health Agency Weybridge labo- ratory.
The case has remained clinically asymptomatic and is now considered to not be infectious.
The highly pathogenic H5N1 bird flu was con- firmed at premises in North Yorkshire and South Suffolk in mid-De- cember, following a string of outbreaks in different locations dating back to October 27, 2021 when the strain was found at a rescue centre in Worces- tershire.
Britain's Food Stand- ards Agency has said that on the basis of the current scientific evidence, bird flu poses a very low food safety risk for UK con- sumers, adding that prop- erly cooked poultry and
Following successful virus isolation from sam- ples collected from birds on the infected premises, APHA analysed full ge- nome sequence data for the HPAI A(H5N1) virus present in these birds.
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National Poultry Newspaper, February 2022 – Page 15
A nationwide Avian In- fluenza Prevention Zone was declared in England on November 3, ordering farms and bird keepers to toughen biosecurity measures.
However, on January 6, 2022 the International Health Regulations Focal Point of the United King- dom of Great Britain and Northern Ireland notified WHO of the detection of a laboratory confirmed human case of avian influenza A(H5) from South West England.
Further characterisation of the virus is ongoing.
This was extended on November 29 to include housing measures with a legal requirement for all bird keepers across the UK to keep birds indoors.
This result was repro- duced on two successive upper respiratory swabs collected during the fol- lowing days.
Genomic analysis demonstrated that the sequence generated con- tained no strong cor- relates for specific in- creased affinity for hu- mans.
A map of bird flu outbreaks in the UK recorded by the government's Animal and Plant Health Agency shows Britain’s 3km protection zones (blue circles) and 3km captive bird zones (dark pink circles) where all visitors, poultry and egg move- ments must be recorded by farmers and birds must be housed or isolated, 10km surveillance zones (black circles) where all visitors, poultry and egg movements must be recorded by farmers, and 10km restricted zones (light pink circles).
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