Avian-origin influenza A viruses tolerate elevated pyrexic temperatures in mammals
Birds operate at body temperatures several degrees higher than those of mammals, and, like mammals, birds are infected by influenza viruses.
Repeated oral exposure to H5N1 influenza virus in pasteurized milk does not cause adverse responses to subsequent influenza infection
In March 2024, a highly pathogenic avian influenza H5N1 (HPAI) clade 2.3.4.4b virus was identified in US dairy cows, with spillover to cats, poultry, and humans.
Vampire bats may have contracted H5N1 bird flu in Peru, raising worries about further spread
Bats could form a bridge between marine and terrestrial mammals, scientists say
First human bird-flu death from H5N5 – what you need to know
H5N1 bird flu has infected growing numbers of people worldwide in recent years, but this week saw something new: the first recorded human case of an H5N5 avian influenza virus.
Avian influenza virus A(H5N1) genotype D1.1 is better adapted to human nasal and airway organoids than genotype B3.13
Three critically ill or fatal avian influenza A(H5N1) human infections have been reported in North America since November 2024.
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Avian influenza in Europe: enhanced surveillance and strict biosecurity needed as detections surge
Between 6 September and 14 November 2025, 1,443 detections of highly pathogenic avian influenza (HPAI) A(H5) viruses were reported in wild birds across 26 European countries.
Europe-wide monitoring for antimicrobial resistance in surface waters can help improve data on health risks
Monitoring in surface waters is needed, and the European Environment Agency has set priorities for Europe-wide surveillance.
HIGHLY PATHOGENIC AVIAN INFLUENZA: Disease situation in the EU
2024-2025 epidemic season: 1052 outbreaks in wild birds in 23 Member States, 549 outbreaks in poultry confirmed in 19 Member States, and 23.2 million poultry in the outbreak establishments (dead or culled).
