Two cases of bird flu have been confirmed near Easingwold.
Highly pathogenic avian influenza was found in commercial poultry at a premises near the town last Tuesday (21 January).
And yesterday (Saturday) a case was “confirmed in a small backyard poultry flock at a second premises near Easingwold”.
In both incidents, the Department for Environment, Food & Rural Affairs (Defra) declared a 3km protection zone and 10km surveillance zone around the premises.
All the poultry at both locations will be “humanely culled”.
A mandatory housing order already in force across the East Riding of Yorkshire, City of Kingston Upon Hull, Lincolnshire, Norfolk and Suffolk has been extended to cover York and North Yorkshire.
This means all bird keepers, whether they have pet birds, commercial flocks or just a few birds in a backyard, must keep their birds housed to protect them from the disease.
It comes as a national Avian Influenza Prevention Zone (AIPZ) came into force for the whole of England and Scotland at noon on Saturday in a bid to mitigate the risk of the disease spreading amongst poultry and other captive birds.
It is now a legal requirement for all bird keepers in Scotland and England to follow strict rules to protect their flocks from the threat of avian flu – including keeping birds indoors.
The highly contagious avian influenza virus is currently circulating in wild birds in the UK and their risk to poultry and other captive birds is currently assessed as being very high, the Department for Environment Food and Rural Affairs (Defra) said.
A Defra spokesperson added the department is not currently expecting overall egg supplies to be affected, but that they are “working closely with industry to monitor the impacts of the outbreak”.
UK chief veterinary officer Christine Middlemiss said: “Given the continued increase in the number of bird flu cases across England, we are taking further action to try and prevent the further spread of disease.
“I urge bird keepers to check which requirements apply to them, to continue to exercise robust biosecurity measures, remain alert for any signs of disease and report suspected disease immediately to the Animal and Plant Health Agency.”
The current risk to human health remains low and properly cooked poultry and poultry products, including eggs, are safe to eat, the Government added.
The measures apply to all bird keepers whether they have pet birds, commercial flocks or just a few birds in a backyard flock.
Rules include regularly changing clothing and footwear before entering bird enclosures for keepers with more than 500 birds, as well as cleansing and disinfecting site vehicles.