The failure of the 1976 swine influenza immunization program. 1977.
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D002487:Centers for Disease Control and Prevention, U.S. / Q000266:history; D049673:History, 20th Century; D006801:Humans; D017589:Immunization Programs / Q000266:history* / Q000592:standards; D009980:Influenza A virus; D007251:Influenza, Human / Q000266:history* / Q000517:prevention & control; D015397:Program Evaluation; D014481:United States