"Even sporadic cases of human-to-human transmission indicate a big change in the virus and suggest it is exploring new ...

Four more health-care workers who tended to a person hospitalized with H5N1 bird flu have revealed that they had respiratory ...

Researchers reveal how H5N1 viruses rapidly adapted to mammals through genetic reassortment and specific mutations, raising ...

Dhillon is an instructor in the Division of Global Health Equity at Brigham and Women’s Hospital and Harvard Medical School.

The CDC said an investigation into a human H5N1 bird flu infection in Missouri has found four additional health care workers ...

More than a month after a person in Missouri mysteriously fell ill with H5-type bird flu, investigators in the state are ...

Seven people in contact with a patient hospitalized with bird flu also developed symptoms, the C.D.C. reported. Some are ...

Experts call for greater testing of contacts of a person who was infected with the H5N1 bird flu strain before the virus ...

Testing is ongoing among five health care workers and a household member exposed to the infected person who all came down ...

A new strain of bird flu threatens to be Australia’s biggest ecological disaster, decimating native birds as well as mammals ...

Research indicates that the food-stealing behavior of some seabirds may be a key factor in the spread of the lethal H5N1 bird ...

H5N1 bird flu virus evolves, posing a threat to mammals and humans. Better surveillance, data collection, and vaccines are ...