March 7, 2025
LAST UPDATED: 3/24/2025
Measles is a highly contagious disease that is caused by the measles virus. It spreads when an infected person coughs or sneezes. The measles virus can survive for up to 2 hours in the air and on surfaces. 9 out of 10 people who are not immune to measles will get it. Measles is especially dangerous for babies and young children.
Symptoms appear 7 to 14 days after exposure. Symptoms of measles include:
Individuals at highest risk for being infected with measles and developing complications include:
The best way to prevent measles is to receive the measles, mumps, and rubella (MMR) vaccine. Most people who receive the MMR or MMRV vaccine are protected for life.
The MMR vaccine is safe and effective. 1 dose of the MMR vaccine is 93% effective at preventing measles and 2 doses are 97% effective. Please talk with your primary care physician about getting the MMR vaccine if you are unvaccinated or unsure of your vaccination status.
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