US doctors baffled by HIV-infected baby.
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D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control / Q000635:transmission*; D006678:HIV / Q000302:isolation & purification; D015658:HIV Infections / Q000517:prevention & control / Q000635:transmission*; D006801:Humans; D007231:Infant, Newborn; D009518:New York; D016635:Universal Precautions