The U.S. measles vaccine program has reduced cases from more than 700,000 a year in the 1950s to a low of 37 in 2004. This week, U.S. measles cases have climbed to their highest level in 25 years. MORE
Anti-vaxxers spread fake anti-vaccine science
The U.S. measles vaccine program has reduced cases from more than 700,000 a year in the 1950s to a low of 37 in 2004. This week, U.S. measles cases have climbed to their highest level in 25 years. MORE