First detection of avian influenza (H5) in poultry in Suriname; multidistrict spread under investigation
The confirmation of influenza A(H5) in a commercial broiler flock represents Suriname's first detected incursion of this pathogen.
Positive case of avian influenza in backyard poultry in Los Ríos Region, Chile
The Agricultural and Livestock Service (SAG) confirmed a positive case of highly pathogenic avian influenza (HPAI) H5N1 in backyard birds in the commune of Corral in the Los Ríos region.
Avian influenza amplified age-related mortality in a long-lived seabird
HPAI-related mortality increased from approximately 5–10% in young breeders to more than 40% in the oldest individuals.
H5N1 Clade 2.3.4.4b Infections in Domestic Cats During an Avian Influenza Outbreak in Italy: Implications for One Health Surveillance
This report documents the first fatal case of highly pathogenic avian influenza virus (HPAIV) H5N1 clade 2.3.4.4b infection in a domestic cat in Italy, detected in early January 2025.
Reassortment of Highly Pathogenic Avian Influenza as a Driver for Zoonotic Spillover, Asia
Perspective, early release: Authors suggest that reassortment, rather than point mutation alone, might be an underrecognized driver of zoonotic risk in endemic H5N1 lineages and is reshaping those lineages.
Genomic detection of highly pathogenic avian influenza H5N1 in Antarctic seabirds reveals connectivity with South American viral lineages
Phylogenetic analysis indicates a direct connectivity between Antarctic seabirds and the broader H5N1 transmission network.
Susceptibility of calves fed unpasteurized milk from cows infected with highly pathogenic avian influenza H5N1
Calves fed infected unpasteurized milk from infected cows became infected, showed clinical signs including nasal discharge and increased respiratory effort, and seroconverted.
Development of a multi-species luciferase-based double-antigen ELISA for the detection of antibodies against influenza A virus H5 clade 2.3.4.4b
The assay allowed sensitive and specific detection of antibodies directed against H5 hemagglutinin of clade 2.3.4.4b in a wide range of birds and mammals, including humans.
