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Mass mortality of southern elephant seals during multi-species outbreak of HPAI H5N1 on sub-Antarctic Heard Island (pre-print)
Phylogenetic analysis indicates the virus was introduced from Crozet Islands, with an estimated arrival around August 2025.
The Road to Readiness: Commentary on the Journey of a Zoonotic H5 Influenza Vaccine Strain Update
Learnings from the development of this vaccine may help to improve pandemic readiness in the future.
Comparative immunogenicity and cross-protection of wild-type and reverse genetics H5N8 (clade 2.3.4.4b) oil-adjuvanted vaccines against circulating H5N1 avian influenza viruses from clades 2.3.4.4b and 2.2.1.2
Challenge studies revealed 100% protection against homologous H5N8 (clade 2.3.4.4b) for both vaccines, while wild-type vaccine demonstrated superior heterologous protection against H5N1.
Avian Influenza Weekly Update # 1048: 6 June 2026
This weekly situation report will highlight the most recent developments in the regional response.
Pathological evidence of neurotropism and oculotropism in wild black-headed gulls naturally infected with H5N1 high pathogenicity avian influenza
Results suggest the eye is an underestimated target organ in HPAI infection, and provide new insights into the pathogenesis of HPAI-induced ocular abnormalities in seabirds.
Predicting high pathogenicity avian influenza H5N1 susceptibility in wild birds
Results provide an empirical indication of species susceptible to HPAI H5N1, which can be used to direct monitoring efforts and disease management globally.
A high-resolution, US-scale digital similar of interacting livestock, wild birds, and human ecosystems for multihost epidemic spread
While regional infection presence significantly enhances outbreak risk, the models reveal substantial differences in spread dynamics across poultry and dairy cattle.
Detection of antibodies to avian influenza virus H5N1 clade 2.3.4.4b in naturally infected cattle for more than a year
Cattle were not previously thought susceptible to highly pathogenic avian influenza (HPAI) H5N1 virus infection until March 2024, when outbreaks were reported among dairy cattle.
