Resistant pneumococci.
D001428:Bacterial Vaccines / Q000627:therapeutic use; D002648:Child; D004352:Drug Resistance, Microbial; D006801:Humans; D010403:Penicillin Resistance; D011008:Pneumococcal Infections / Q000517:prevention & control*; D013296:Streptococcus pneumoniae / Q000187:drug effects*
D001428:Bacterial Vaccines