DOI: 10.2807/1560-7917.es.2023.28.31.2300400 ISSN: 1560-7917
Highly pathogenic avian influenza A(H5N1) virus infection on multiple fur farms in the South and Central Ostrobothnia regions of Finland, July 2023
Erika Lindh, Hanna Lounela, Niina Ikonen, Tuija Kantala, Carita Savolainen-Kopra, Ari Kauppinen, Pamela Österlund, Lauri Kareinen, Anna Katz, Tiina Nokireki, Jari Jalava, Laura London, Marjaana Pitkäpaasi, Jaana Vuolle, Anna-Liisa Punto-Luoma, Riikka Kaarto, Liina Voutilainen, Riikka Holopainen, Laura Kalin-Mänttäri, Terhi Laaksonen, Hannu Kiviranta, Aino Pennanen, Otto Helve, Ilona Laamanen, Merit Melin, Niina Tammiranta, Ruska Rimhanen-Finne, Tuija Gadd, Mika Salminen- Virology
- Public Health, Environmental and Occupational Health
- Epidemiology
Since mid-July 2023, an outbreak caused by highly pathogenic avian influenza A(H5N1) virus clade 2.3.4.4b genotype BB is ongoing among farmed animals in South and Central Ostrobothnia, Finland. Infections in foxes, American minks and raccoon dogs have been confirmed on 20 farms. Genetic analysis suggests introductions from wild birds scavenging for food in farm areas. Investigations point to direct transmission between animals. While no human infections have been detected, control measures are being implemented to limit spread and human exposure.