Reuters -- The biggest U.S. outbreak of measles since 1997 has sickened 127 people in 15 states, most of whom were not vaccinated against the highly contagious viral illness, federal health officials said on Wednesday.
Reuters -- The biggest U.S. outbreak of measles since 1997 has sickened 127 people in 15 states, most of whom were not vaccinated against the highly contagious viral illness, federal health officials said on Wednesday.