Palmetto High School is the first person in Florida confirmed to have measles, the highly contagious respiratory disease.

Here’s what to know about the current measles outbreak, how common the measles is in the U.S., how it spreads and what the symptoms and treatment are.

Measles, a vaccine-preventable infectious disease, was eliminated as an endemic disease from the United States in 2000. Now, 25 years later, it has spread