As measles cases continue to spread throughout the U.S. — with 12 states reporting official outbreaks, according to the latest CDC data — concern is growing among high-risk groups.
Children under the age of 5 are most vulnerable to measles, health experts confirm.
The CDC recommends that children receive two doses of the MMR (measles-mumps-rubella) vaccine, starting with the first dose at 12 to 15 months of age, and a second dose at 4 through 6 years of age.
That means children under 5 may not have full protection.
