18 February 2025

Highly pathogenic avian influenza (HPAI) H5N1 has been confirmed in commercial poultry at a third premises near Market Weighton, East Riding of Yorkshire, Yorkshire (AIV 2025/19). A 3km protection zone and 10km surveillance zone have been declared around each premises. All poultry on the premises will be humanely culled

Highly pathogenic avian influenza (HPAI) H5N1 has been confirmed in other captive birds at a fourth premises near Market Weighton, East Riding of Yorkshire, Yorkshire (AIV 2025/20). A 3km captive bird (monitoring) controlled zone has been declared surrounding the premises. The affected birds on the premises will be humanely culled.

Highly pathogenic avian influenza (HPAI) H5N1 has been confirmed in commercial poultry at a fifth premises near Market Weighton, East Riding of Yorkshire, Yorkshire (AIV 2025/21). A 3km protection zone and 10km surveillance zone have been declared around each premises. All poultry on the premises will be humanely culled.

Following successful completion of disease control activities and surveillance in the zone around a premises near Rye, Rother, East Sussex (AIV 2025/03), the 10km surveillance zone has been revoked.

Following the successful completion of disease control activities and surveillance within the zone around a premises near Easingwold, Hambleton, North Yorkshire (AIV 2025/06), the 3km protection zone has been revoked and the area that formed this zone becomes a surveillance zone.

Influenza of avian origin has been detected in a small number of grey seals on the North Norfolk Coast, and we are aware that avian influenza has also been detected in wild birds in the area.

Mammals which have had close contact with infected wild birds or contaminated environments can become infected with influenza of avian origin.

The numbers involved were not above the usual annual mortality level at this site and this finding is evidence of the effectiveness of the UK’s wildlife surveillance system. There is no evidence to suggest an increased risk to non-avian wildlife.