The convergence of multiple flu strains in one animal can allow new virus strains to form—just as they did in past pandemics.

Mysterious US bird flu case in person without any known contact with an infected animal raises spectre of human-to-human ...

San Diego County is now the fifth locality in the state to report the environmental detection of H5 influenza virus or "bird ...

On Monday state officials announced they had completed testing on all 95 licensed farms in Massachusetts that have dairy ...

A patient in Missouri who was hospitalized after an infection with bird flu had the H5N1 strain of the virus, the US Centers ...

While authorities are downplaying the dangers of the H5N1 virus, it can evolve very rapidly and every spillover event into ...

Public health officials are still trying to determine how a Missouri resident contracted bird flu without having any contact ...

Health officials are trying to find out how a person in Missouri was sickened by H5 avian influenza, or bird flu. It’s the latest twist in concerning new behavior of the virus, which was detected in ...

The person is the 14th infected with H5N1 in the U.S. this year and the first to be hospitalized and to test positive without coming into known contact with an infected animal. The others, who were ...

A hospitalized patient in Missouri was infected with bird flu despite having had no known contact with dairy cows or other ...

They are the 15th person to become infected in the US since the strain hit US livestock earlier this year.