Causes
Measles
Measles is caused by the morbillivirus, an extremely contagious virus. It spreads through the air when an infected person breathes, coughs, or sneezes. The virus can remain airborne for up to two hours and can also spread by touching contaminated surfaces and then touching the mouth, nose, or eyes. The virus is contagious from about four days before to four days after the rash appears.