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Category: Outbreaks & Epidemiology ×
H5N1 should now be treated as a permanent systemic risk, not a succession of outbreaks
Highly pathogenic avian influenza has moved beyond the model of episodic poultry outbreaks and should now be managed as a persistent, multi-host systemic risk.
African swine fever progresses faster in wild boar than in domestic pigs
Wild boar and domestic pigs respond differently to highly virulent African swine fever virus (ASFV), according to a 2026 doctoral thesis from the Swedish University of Agricultural…
Chronic Wasting Disease Worldwide: 2026 Update on CWD Cases and Geographic Spread
Chronic wasting disease (CWD) continues to expand in 2026, but the global burden remains overwhelmingly concentrated in North America. As of 5 October, CWD has been documented i...
Epizootic hemorrhagic disease expands in the US as 2026 outbreaks hit wild deer
A new Nebraska study shows that epizootic hemorrhagic disease virus (EHDV) was already circulating widely in wild cervids before the current 2026 outbreak season. Testing of hun...
West Nile virus in Europe: Dutch deaths rise, while France and Spain report continued animal and human expansion
West Nile virus activity remained substantial across Europe during this week, with some of the clearest new signals coming from the Netherlands, France, Italy and Spain. The Net...
Bluetongue in Europe: BTV-3 intensifies in the British Isles while France reports a much quieter season
Bluetongue virus serotype 3 (BTV-3) remained the main animal-health signal in north-western Europe during the final week of September 2026. Great Britain continued to report a v...
Bluetongue in the UK: more than 2,300 premises affected by the end of September
Bluetongue virus serotype 3 (BTV-3) has expanded sharply across Great Britain during September 2026, with 2,309 affected premises confirmed in the 2026–2027 season by 30 Septemb...
H5N1 in Africa: two decades of data reveal persistent poultry hotspots and uneven zoonotic risk
A continent-wide analysis of avian influenza in Africa shows that H5N1 has dominated reported animal outbreaks since 2004 and remains concentrated in a limited number of major p...
H5N1 in Canadian wildlife: waterfowl, raptors and reassortant viruses dominate four years of surveillance
A national analysis of highly pathogenic avian influenza A(H5N1) in Canadian wildlife has identified 2,657 detections between January 2022 and March 2026, with wild birds accoun...
Avian influenza in the United States: H5N1 activity rises again as autumn migration begins
Highly pathogenic avian influenza A(H5N1) is becoming more visible again in U.S. poultry as the autumn migration season develops. During the past ten days, Iowa confirmed a new...
Machine learning maps avian influenza risk hotspots across India
A new machine-learning study has mapped areas of India where highly pathogenic avian influenza is most likely to be reported, identifying eastern, northeastern, coastal and sele...
Hunting dogs may represent an overlooked H5N1 exposure interface in the United States
Hunting dogs that retrieve wild birds could occupy an important but poorly studied position in the ecology of highly pathogenic avian influenza A(H5N1). A U.S. survey of 112 hun...