Measles is very contagious, the virus is spread by respiratory droplets (when an infected person coughs, sneezes, etc). Measles virus can survive in the air and on surfaces for up to 2 hours, and 90% of non-immune people who are exposed to measles become infected<ref>https://www.cdc.gov/vaccines/pubs/pinkbook/meas.html</ref> | Measles is very contagious, the virus is spread by respiratory droplets (when an infected person coughs, sneezes, etc). Measles virus can survive in the air and on surfaces for up to 2 hours, and 90% of non-immune people who are exposed to measles become infected<ref>https://www.cdc.gov/vaccines/pubs/pinkbook/meas.html</ref> |