What is the rate of antibiotic resistance among group A streptococcal (GAS) isolates?

Updated: Sep 07, 2018
  • Author: Zartash Zafar Khan, MD, FACP; Chief Editor: Pranatharthi Haran Chandrasekar, MBBS, MD  more...
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Answer

In 2006, of 50 GAS isolates examined with antibiotic susceptibility tests, 100% were found to be susceptible to penicillin, ampicillin, cefotaxime, cefazolin, and vancomycin. Eight isolates (16%) exhibited some level of antibiotic resistance. Six were resistant to erythromycin alone, and 2 were resistant to erythromycin and clindamycin (the first clindamycin-resistant isolates reported since 1999). [38]


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