title: Penicillin-insensitive pneumococci: isolation from patients with pneumonia.
abstract: Pneumococci relatively insensitive to penicillin G were isolated from the sputum of two patients with pneumonia. One of the organisms was also relatively insensitive to ampicillin, cefamandole, and cephalothin and was resistant to tetracycline. Because penicillin-insensitive pneumococci are being reported with greater frequency, continued surveillance of pneumococcal sensitivity to penicillin is appropriate.
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D008826:Microbial Sensitivity Tests; D008875:Middle Aged; D010403:Penicillin Resistance; D010406:Penicillins / Q000494:pharmacology; D011018:Pneumonia, Pneumococcal / Q000382:microbiology*; D013183:Sputum / Q000382:microbiology*; D013296:Streptococcus pneumoniae / Q000187:drug effects / Q000302:isolation & purification*
chemical_list: D010406:Penicillins