A new COVID variant called "Nimbus" is spreading. Here's what you need to know about the incubation period, symptoms ...

The five stages of infection are incubation, prodromal, illness, decline, ... Share on Pinterest Luis Alvarez/Getty Images. ... the flu has a short incubation period of about 2 days.

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 singer while infectious..

Measles is very contagious. Here's how to avoid it Measles first infects the respiratory tract, then spreads throughout the body, causing a high fever, runny nose, cough, red, watery eyes and a rash.