Germany reported an outbreak of highly pathogenic H5N1 bird flu on a farm in the eastern region of Saxony near the border ...

In what could be the first cases of bird flu spreading between humans in the United States, a group of potential H5N1 ...

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

For influenza viruses, imperfection is a strength. They constantly mutate, producing new strains that challenge immune ...

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

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 ...

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

What is known so far about the human cases of bird flu in the U.S. is enough to worry those who spend their professional days ...

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

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

A cluster of healthcare workers has been tested for H5N1 bird flu in what could be the first cases of human-to-human spread of the virus.