new case of bird flu in hong kong

The report, dated 12 December, covers a new outbreak of H5N1 avian flu on a farm in Yuen Long.



It is reported that there were 67,968 chickens and 25,680 fertilized eggs on this index farm with compulsory avian influenza vaccination program and strict biosecurity measures in place. Unusual mortality was first noted in the 285 sentinel chickens on 8 December.



Clinical signs observed included rales, dyspnoea, cyanosis and oedema of the comb and wattle with yellow creamy nasal discharge. Cloacal swabs and chicken carcasses were collected on the same day for laboratory testing.



Culling of the chickens and eggs began on 9 December and finished on 10 December.