159 cases of measles in the United States from January 1 through August 24 . Those who choose not to vaccinate put other people 's babies at risk , since babies can not be vaccinated until their first birthday , and are therefore vulnerable to the disease . Last highest year was 2011 , when there were 222 cases . Comment: Nearly 40 % of children under the age of five who get measles have to be hospitalized .
159 cases of measles in the United States from January 1 through August 24 . Last highest year was 2011 , when there were 222 cases . Comment: Nearly 40 % of children under the age of five who get measles have to be hospitalized .