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Change in susceptibility of group B streptococci to penicillin G from 1968 through 1975

Insights

Group B streptococci causing sore throats show a growing resistance to penicillin G. This in vitro study tracked resistance trends over eight years in 212 bacterial isolates.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Clinical Medicine

Background:

  • Group B Streptococcus (GBS) is a significant pathogen.
  • Sore throat infections can be caused by various bacteria, including GBS.
  • Penicillin G is a primary antibiotic for treating streptococcal infections.

Purpose of the Study:

  • To investigate the antimicrobial susceptibility of GBS isolates from sore throats.
  • To determine if resistance to penicillin G has increased over time.

Main Methods:

  • Collection and culture of 212 GBS isolates from patients with sore throats over an 8-year period.
  • In vitro susceptibility testing of GBS isolates against penicillin G.

Main Results:

  • A small but notable percentage of GBS isolates exhibited increased resistance to penicillin G.
  • The observed resistance to penicillin G showed an increasing trend over the study period.

Conclusions:

  • The findings suggest a potential emerging challenge in treating GBS-related sore throats with penicillin G.
  • Continued surveillance of GBS antimicrobial resistance is crucial for effective clinical management.

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