Here are other key things to know about measles and the current outbreak. What Is Measles? Measles is a highly contagious, airborne disease able to infect up to 90% of people who ...
The CDC defines an outbreak as three or more related cases. Three measles clusters have qualified as outbreaks in 2025, the ...
The number of measles cases associated with an outbreak in Texas has increased to 159 -- an increase of 13 cases in the past ...