title: Secondary rates of Haemophilus influenzae type b disease among day care contacts.
mesh_terms: D002656:Child Day Care Centers; D002675:Child, Preschool; D006192:Haemophilus Infections / Q000453:epidemiology* / Q000517:prevention & control; D006193:Haemophilus influenzae; D006801:Humans; D007223:Infant; D012293:Rifampin / Q000627:therapeutic use; D014481:United States
chemical_list: D012293:Rifampin