The CDC study provides the largest window to date into how the bird virus first detected in March in dairy cows may be ...

The CDC said Thursday it is updating its recommendations for testing, treatment and protection for workers who may be exposed animals infected with bird flu.

The CDC recommends those who have severe E. coli symptoms -- including bloody diarrhea, a fever higher than 102 F and vomiting -- to contact a health care provider immediately. ABC News' Youri ...

The CDC also recommends emptying containers of still or stagnant water, to eliminate places where mosquitos can breed. ABC News' Youri Benadjaoud contributed to this report.

Lassa fever is primarily spread by rats found in West Africa, the CDC says. An Iowa resident has ... at the Yale School of Public Health, told ABC News. "The virus, which is in this class of ...