title: Microbiology problem.
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D010325:Pasteurella; D010326:Pasteurella Infections / Q000175:diagnosis*; D013203:Staphylococcal Infections / Q000175:diagnosis; D013211:Staphylococcus aureus