这个词是什么意思？
A subtype of INFLUENZA A VIRUS comprised of the surface proteins hemagglutinin 5 and neuraminidase 1. The H5N1 subtype, frequently referred to as the bird flu virus, is endemic in wild birds and very contagious among both domestic (POULTRY) and wild birds. It does not usually infect humans, but some cases have been reported.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D053124 · MeSH 2026。
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