Add Yahoo as a preferred source to see more of our stories on Google. Two cases of the deadly Nipah virus have been reported in India, leading to confusion and fear that it could spread to the U.S.

One of the main mysteries confounding development of an HIV vaccine is why some people infected with the virus make the desired antibodies after several years, but a vaccine can't seem to induce the ...

Two cases of the deadly Nipah virus have been reported in India, leading to confusion and fear that it could spread to the U.S. According to reports from The Telegraph, PEOPLE Magazine and The ...