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 ...

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 ...

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

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

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

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

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

H5N1 – a highly infectious form of bird flu with a death rate of up to 55 per cent – has been spreading in US dairy cattle ...

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.