San Antonio Zoo stays open with enhanced protocols after a wild vulture found dead on the grounds tested 'non-negative' for ...
There is no cure for the disease, which has a high mortality rate among birds but remains a low risk to people, according to ...
Before there was a vaccine in 1963, measles infected millions and killed hundreds of people in the U.S. every year. Now, with the first measles death occurring in over a decade, doctors warn that ...