A second subtype of H5 bird flu, known as D1.1, was detected in dairy cattle and infected one worker in the US state of Nevada. Will it spread further among people?

Avian influenza H5N1 continues to spread. A second type of the virus, D1.1, has been detected in dairy cattle in Nevada, US. What does it mean for people?What you need to know: A second type of ...

Feb. 21, 2025 — Infection with Zika virus in pregnancy can lead to neurological disorders, fetal abnormalities and fetal death. Until now, how the virus manages to cross the placenta ...

"This seems like the worst time to be taking steps to degrade our nation's preparedness," says Dr. David Fleming, a former CDC official ... to those caused by the Zika virus.

The CDC said: "The publication referenced demonstrates that the bat virus can use a human protein to enter cells in the laboratory, but they have not detected infections in humans. CDC will ...