CDC study documents growing problem of pneumococcal resistance.
D001428:Bacterial Vaccines / Q000276:immunology; D002487:Centers for Disease Control and Prevention, U.S.; D004352:Drug Resistance, Microbial; D006801:Humans; D011008:Pneumococcal Infections / Q000382:microbiology*; D013296:Streptococcus pneumoniae / Q000187:drug effects* / Q000302:isolation & purification; D014481:United States
D001428:Bacterial Vaccines