H5 subtype high pathogenicity avian influenza virus infections: current situation and countermeasures

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Key Points

To outline the current situation regarding H5 subtype high pathogenicity avian influenza virus infections and necessary countermeasures.
Review of recent infections in wild birds and poultry farms since the virus's emergence in 1996.
Monitoring of avian influenza virus spread across continents, particularly in Japan, Europe, Africa, and North America.
Discussion of biosecurity measures to prevent transmission from wild birds to poultry.
The H5 subtype virus has been detected in wild birds for five consecutive seasons in Japan from 2020-2021.
Increased infections in mammals linked to contact with infected wild birds have been reported.
Concerns grow over the persistence of both high and low pathogenicity avian influenza viruses in wild waterfowl.

Study highlights H5 subtype avian influenza virus spread in wild birds and poultry, emphasizing the need for biosecurity measures.

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Yoshihiro SAKODA (2026) studied this question.

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