Bird flu cases may be going undetected in US dairy workers

Ten people in the US have been infected with a strain of bird flu called H5N1, but patchy surveillance means that some cases may be slipping through the cracks

​Ten people in the US have been infected with a strain of bird flu called H5N1, but patchy surveillance means that some cases may be slipping through the cracks Ten people in the US have been infected with a strain of bird flu called H5N1, but patchy surveillance means that some cases may be slipping through the cracks