It was the worst pandemic in modern history. The 1918 influenza virus swept the globe, killing at least 50 million people worldwide. In the US, the disease devastated cities, forcing law ...

RSV is usually contagious for three to eight days. A patient also may be contagious a day or two before experiencing symptoms ...

This is a developing story. The Louisiana patient who contracted what officials said was the nation’s first “severe” case of ...