title: Geographic clustering of nonmedical exemptions to school immunization requirements and associations with geographic clustering of pertussis.
mesh_terms: D000293:Adolescent; D017677:Age Distribution; D002648:Child; D016000:Cluster Analysis; D005260:Female; D006291:Health Policy; D006801:Humans; D007114:Immunization / Q000706:statistics & numerical data*; D015994:Incidence; D008297:Male; D010567:Pertussis Vaccine / Q000008:administration & dosage*; D012189:Retrospective Studies; D012574:Schools; D017678:Sex Distribution; D014481:United States / Q000453:epidemiology; D014917:Whooping Cough / Q000453:epidemiology / Q000517:prevention & control*
chemical_list: D010567:Pertussis Vaccine