Common complications include diarrhea (in 8% of cases), middle ear infection (7%), and pneumonia (6%).^[5] These occur in part due to measles-induced immunosuppression.^[6] Less commonly, seizures, blindness, or inflammation of the brain may occur.^[5][7]

Measles is an airborne disease which spreads easily from one person to the nextthrough the coughs and sneezes of infected people.^[7] It may also be spread through direct contact with mouth or nasal secretions.^[7] It is extremely contagious: nine out of ten people who are not immune and share living space with an infected person will be infected. Furthermore, measles’s reproductive number estimates vary beyond the frequently cited range of 12 to 18…

-Wikipedia