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Miami Children's Hospital pediatrician Dr. Amanda Porro, M.D administers a measles vaccination to Sophie Barquin,4, as her mother Gabrielle Barquin and Miami Children's Hospital R.N. Diane Lichtman, right, hold her during a visit to the Miami Children's Hospital on January 28, 2015 in Miami, Florida. A recent outbreak of measles has some doctors encouraging vaccination as the best way to prevent measles and its spread.
Miami Children's Hospital pediatrician Dr. Amanda Porro, M.D administers a measles vaccination to Sophie Barquin,4, as her mother Gabrielle Barquin and Miami Children's Hospital R.N. Diane Lichtman, right, hold her during a visit to the Miami Children's Hospital on January 28, 2015 in Miami, Florida. A recent outbreak of measles has some doctors encouraging vaccination as the best way to prevent measles and its spread.

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National Institute of Allergy and Infectious Diseases director Dr. Anthony Fauci on CNN.

NIH doctor debunks celebrities on vaccines

National Institute of Allergy and Infectious Diseases director Dr. Anthony Fauci on CNN.