Although the US has reported three different isolates in two states, there have been no reports of outbreaks in commercial farms. Similarly, although Canada has reported H5N2 in 12 farms in British Columbia, there have been no reports of H5N8 anywhere, and no reports of any Fujian H5 in wild birds.

These absences raises serious concerns about the level of surveillance and the true distribution of H5N8 and H5N2 in North America.

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