Measles was first identified as a virus in the early 20th century. This disease caused significant morbidity and mortality. A measles vaccine was first introduced in 1963, using a live virus strain developed from a child who had measles. In the 1970s and 1980s, many countries began implementing widespread measles vaccination programs as part of
How vaccine hesitancy is bringing back deadly childhood diseases originally appeared in KevinMD.com.
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