Drugs used to treat HIV could affect how the body responds to syphilis, inadvertently contributing to a current outbreak, a new study suggests. Syphilis cases in several countries have risen sharply in...

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Anthony S. Fauci, M.D., Director, National Institute of Allergy and Infectious Diseases Carl Dieffenbach, Ph.D., Director, Division of AIDS, NIAID Francis S. Collins, M.D., Ph.D., NIH Director When the...