Streptococcus pneumoniae: Patterns of Penicillin Nonsusceptibility

Breiman RF et al. JAMA. 1994;271:1831-1835.

• Major resistance trends by serotype

  • 6B, 9V, 14, 19A, 19F, 23F are most frequent

• Penicillin-susceptible strains may acquire resistance over time

• Resistant strains are often resistant to other classes of antibiotics

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