The World Health Organization (WHO) has assessed the risk of the H5N1 bird flu virus spreading among cattle herds in countries other than the United States after the first cases were reported in the United States from migratory birds.
The warning comes as US authorities are trying to assess the safety of cow's milk after detecting the H5N1 virus in 34 dairy herds in 9 states across the country (since late March) and 1 human case in Texas.
Speaking at a press conference in Geneva, Switzerland, Director of the WHO's Global Influenza Program, Wenqing Zhang, said that because wild birds can carry the bird flu virus everywhere, there is a risk that cattle herds in other countries will be infected with the virus.
WHO officials also applauded US health officials for coordinating to provide regular updates on the outbreak and sharing early virus genome sequence analysis information so that the agency could monitor the situation and adjust necessary response preparedness measures.