20,000 people may have been exposed to measles during religious gathering in Kentucky, CDC says

About 20,000 people who attended a large religious gathering in Kentucky last month may have been exposed to measles, and undervaccinated attendees should quarantine and monitor symptoms for 21 days, the US Centers for Disease Control and Prevention said in a Health Alert Network Advisory on Friday.

​About 20,000 people who attended a large religious gathering in Kentucky last month may have been exposed to measles, and undervaccinated attendees should quarantine and monitor symptoms for 21 days, the US Centers for Disease Control and Prevention said in a Health Alert Network Advisory on Friday.