Washington DC/IBNS, Nov. 19 -- A US man has become the first person to be infected with H5N5 strain of bird flu, media reports said.

An older adult, who was hospitalised with influenza symptoms in early November, has been confirmed to have influenza A H5, a type of avian influenza.

Additional testing shows the virus to be H5N5, an avian influenza virus that has previously been reported in animals but never before in humans.

Domestic poultry or wild birds are the most likely source of virus exposure; however, a public health investigation is ongoing, the Washington State Department of Health said.

The Washington State Department of Health is working with the local health department and the Washington State Department of Agriculture to ...