Health

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First responders tend to the wounded, including a young boy in a wheelchair, where two explosions occurred along the final stretch of the Boston Marathon on Monday. Dr. David Mooney sees bleeding children all the time. As director of the…

Elvis Presley receives the Salk polio vaccine in 1956. Awareness about the vaccine led to the end of polio in the U.S. Most babies today still receive the injection. Photo courtesy of March of Dimes. April 12, 1955, was…