#UK [#Scotland] - High pathogenicity avian #influenza #H5N1 viruses (Inf. with) (#poultry) - Immediate notification

 

{Scotland}

A small commercial poultry premise. Samples taken were positive for HPAI H5N1. Birds presented clinical signs prior to testing.

Source: 

Link: https://wahis.woah.org/#/in-review/7173

____

#UK {#Scotland} - High pathogenicity avian #influenza #H5N1 viruses (#poultry) (Inf. with) - Immediate notification

 

~155K laying chickens’ flock. Samples taken were positive for HPAI H5N1. Birds presented clinical signs prior to testing.

Source: 

Link: https://wahis.woah.org/#/in-review/7139

____

#UK - High pathogenicity avian #influenza #H5N1 viruses (#poultry) (Inf. with) - Immediate notification

 

{Scotland}

Broiler breeder flock of 28-week-old birds. Increased mortality and other clinical signs reported. Samples taken were found positive for HPAI H5N1.

Source: WOAH, https://wahis.woah.org/#/in-review/7013

____

#UK - High pathogenicity avian #influenza #H5N1 viruses (#poultry) (Inf. with) - Immediate notification

{Scotland, Aberdeenshire} Commercial layer flock with approx. 88,000 laying hens. Increased mortality and other clinical signs reported. Samples taken were found positive for HPAI H5N1.

Source: WOAH, https://wahis.woah.org/#/in-review/6695

____

#UK - High pathogenicity avian #influenza #H5N1 viruses (#poultry) (Inf. with) - Immediate notification

{Highland Scotland} Flock of 23 chickens and 4 goose. Increased mortality reported. Samples taken were found positive for HPAI H5N1.

Source: WOAH, https://wahis.woah.org/#/in-review/6357

____

#UK - High pathogenicity avian #influenza #H5N1 viruses (#poultry) (Inf. with) - Immediate notification

{Scotland} Backyard flock with 6 hens, approximately 5 months old. Increased mortality and other clinical signs reported. Official samples were H5N1 HPAI positive.

Source: WOAH, https://wahis.woah.org/#/in-review/6186

_____

Asymptomatic #infection and #antibody #prevalence to co-occurring avian #influenza viruses vary substantially between sympatric #seabird species following #H5N1 #outbreaks

Abstract

Emerging infectious diseases are of major concern to animal and human health. Recent emergence of high pathogenicity avian influenza virus (HPAIV) (H5N1 clade 2.3.4.4b) led to substantial global mortality across a range of host species. Co-occurring species showed marked differences in mortality, generating an urgent need for better epidemiological understanding within affected populations. We therefore tested for antibodies, indicative of previous exposure and recovery, and for active viral infection in apparently healthy individuals (n = 350) across five co-occurring seabird species on the Isle of May, Scotland, during 2023, following H5N1 HPAIV associated mortality in the preceding summer. Antibody prevalence to AIV subtypes varied substantially between species, ranging from 1.1% in European shags (Gulosus aristotelis) (to H5) to 78.7% in black-legged kittiwakes (Rissa tridactyla) (to H16 or both H13 and H16), and between 31 and 41% for three auk species (H5, H16 or both). At least 20.4% of auks had antibodies to an as yet unidentified subtype, suggesting further subtypes circulating in the population. We found low levels of active, but asymptomatic, AIV infection in individuals (1.6–4.5%), but excluded this as H5N1. Our results emphasise the importance of testing healthy individuals to understand the prevalence of co-circulating AIV subtypes in wild populations, and the potential for future reassortment events which could alter virus behaviour and impact.

Source: Scientific Reports, https://www.nature.com/articles/s41598-025-85152-6

_____