Foolish vaccine exemptions.
D002648:Child; D003242:Conscience; D006291:Health Policy; D006801:Humans; D017589:Immunization Programs / Q000331:legislation & jurisprudence*; D037141:Mandatory Programs / Q000941:ethics; D033282:Parental Consent; D010290:Parents / Q000523:psychology; D010567:Pertussis Vaccine / Q000008:administration & dosage; D045808:Refusal to Participate / Q000331:legislation & jurisprudence*; D012067:Religion; D013219:State Government; D014481:United States; D014611:Vaccination; D035141:Voluntary Programs / Q000941:ethics; D014917:Whooping Cough / Q000453:epidemiology / Q000517:prevention & control
D010567:Pertussis Vaccine