Measles infections appear all over the world. Prior to the current effective immunization program, large-scale measles outbreaks occurred on a two to three-year cycle, usually in the winter and spring.
Most likely not because a woman had cow pox in an experiment and was then given the small pox disease and never got it. Wow i did learn something from my Honors Biology teacher.
The measles is caused by a type of virus called Paramyxovirus. It is spread through the tiny droplets that may spray into the air when a person carrying the virus sneezes or coughs.