title: Therapeutic failure in group C streptococcal pharyngitis.
mesh_terms: D002675:Child, Preschool; D006801:Humans; D010403:Penicillin Resistance; D010406:Penicillins / Q000627:therapeutic use*; D010612:Pharyngitis / Q000188:drug therapy / Q000382:microbiology*; D013290:Streptococcal Infections / Q000188:drug therapy*
chemical_list: D010406:Penicillins