The prodromal stage refers to the period after incubation and before the characteristic symptoms of infection occur. People can also transmit infections during the prodromal stage. During this ...

(AP Photo/Annie Rice, File) New Jersey health officials are asking people who went to last week’s Shakira concert at MetLife Stadium to monitor for measles symptoms because a person went to see the ...

There are also large outbreaks in Mexico and Canada. It's a respiratory disease caused by one of the world’s most contagious viruses. The virus is airborne and spreads easily when an infected ...