175 measles cases have been reported so far this year in the U.S . It continues to kill an estimated 300 people worldwide each year . In 2011 , there were 222 cases . 80 % of the victims this year were not vaccinated or had unknown health status .
175 measles cases have been reported so far this year in the U.S . It continues to kill an estimated 300 people worldwide each year . 80 % of the victims this year were not vaccinated or had unknown health status .