Doctors defend safety of vaccinations

U.S. health officials defended the safety of childhood vaccines after an agency conceded that a vaccine was linked to one child's autism diagnosis.

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<p><a href="http://www.physorg.com/news124172607.html">Doctors defend safety of vaccinations</a></p> <p>U.S. health officials defended the safety of childhood vaccines after an agency conceded that a vaccine was linked to one child's autism diagnosis. </p>