What are the current measles vaccine recommendations? "Most virologists only dream of a solution as successful" as today's measles vaccine, CDC's principal deputy director, Dr. Anne Schuchat, wrote in 2015 . If you were born before the 1960s, you may have never been vaccinated against measles because it was assumed you'd been exposed to the virus. Then, in 1963, two types of measles vaccines were introduced: One was "killed" and another "live attenuated." The difference is that the first inactivates the measles virus, whereas the other has a weakened form of it.

Source: CNN April 19, 2019 16:07 UTC