title: Penicillin-resistant Streptococcus pneumoniae increasingly threatens the patient and challenges the physician.
authors.forename: M A
authors.initials: MA
authors.lastname: Mufson
mesh_terms: D002170:Canada / Q000453:epidemiology; D014943:Global Health; D006801:Humans; D010403:Penicillin Resistance; D012141:Respiratory Tract Infections / Q000453:epidemiology / Q000382:microbiology*; D013290:Streptococcal Infections / Q000453:epidemiology; D013296:Streptococcus pneumoniae / Q000187:drug effects*; D014481:United States / Q000453:epidemiology