The United States has confirmed a human case of the H5N1 strain of bird flu. Bird flu is a condition caused by an influenza virus which is generally observed among
Tag "Human case"
The United Kingdom has detected the first human case of influenza A(H1N2) virus. Influenza A(H1) viruses are enzootic (regularly occur in animals) in swine populations. H1N1, H1N2 and H3N2 are