Wild birds in the Mai Po Nature Reserve in Hong Kong have yielded H5N1 avian influenza. Recent isolates were obtained from a dead wild bird (species not identified) and an environmental sample.

During recent months, authorities on Mainland China reported H5N1isolates from migratory birds.  It is a general observation that migratory birds are

identified as carriers of H5N1 before reports of incident cases occur in commercial and backyard flocks.  In the case of the Peoples Republic of China, there are no reports of commercial outbreaks only in wild birds.  Either submissions to the WOAH are suppressed, or vaccination has proved effective in protecting flocks or then they may just be lucky as with the poultry industry in Brazil.