As childhood vaccinate rates drop in the U.S. outbreaks of measles are rising. In his new book Booster Shots, Dr. Adam Ratner makes the case that this is a bad sign for public health.

Are people at risk for bird flu? How can I protect myself? Bird flu’s risk for the general public is still low, with no signs ...

Nearly 120 people on board a cruise ship that departed from Florida this month have become ill with norovirus, according to a ...