No evidence of H5N1 avian influenza virus infection in Japanese horses in 2025.
The global spillover of clade 2.3.4.4b H5N1 highly pathogenic avian influenza virus into mammalian hosts has become a public health concern as well as to the equine industry. However, previous reports on H5N1 natural infection and the presence of specific antibodies in horses remain limited. Therefore, we conducted a s...