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Invasive disease caused by Neisseria meningitidis relatively resistant to penicillin in North Carolina
C R Woods1, A L Smith, B L Wasilauskas
1Dept. of Pediatrics, Bowman Gray School of Medicine, Winston-Salem, NC 27157.
Abstract:
A case of sepsis and meningitis caused by Neisseria meningitidis with relative resistance to penicillin occurred in North Carolina in August 1992. This isolate was relatively resistant due to decreased affinity of its penicillin-binding protein 2 for penicillin. Such isolates have been reported in Spain, elsewhere in Europe, in South Africa, and in Canada, but invasive disease caused by meningococcal isolates relatively resistant to penicillin was not recognized in the United States before a preliminary report of this case in October 1992. The Centers for Disease Control and Prevention recently retrospectively identified 3 additional cases from 1991. A fifth case occurred in Kentucky in 1993. Surveillance studies of penicillin susceptibility of N. meningitidis isolates suggest such meningococci have existed sporadically in the past. Increases in prevalence and magnitude of penicillin resistance among strains of N. meningitidis would require reconsideration of current clinical practice with regard to treatment of meningococcal disease.
Insights
Penicillin-resistant Neisseria meningitidis strains causing invasive disease were identified in the US. This resistance is linked to altered penicillin-binding protein 2, necessitating a review of treatment guidelines.
Area of Science:
- Microbiology
- Infectious Diseases
- Clinical Medicine
Background:
- Neisseria meningitidis is a significant cause of bacterial meningitis and sepsis.
- Penicillin is a primary treatment for meningococcal disease.
- Reduced susceptibility to penicillin in N. meningitidis has been reported internationally.
Observation:
- A case of sepsis and meningitis in North Carolina was caused by a Neisseria meningitidis isolate with relative penicillin resistance.
- This resistance mechanism involves decreased affinity of penicillin-binding protein 2.
- Previously unrecognized invasive disease due to penicillin-resistant strains was identified retrospectively in the US.
Findings:
- Three additional cases from 1991 and one from 1993 were identified, indicating the presence of these resistant strains in the US.
- Surveillance suggests sporadic historical occurrence of penicillin-resistant N. meningitidis.
- The resistance mechanism is linked to alterations in penicillin-binding protein 2.
Implications:
- The emergence of penicillin-resistant Neisseria meningitidis in the US requires monitoring.
- Clinical practice for treating meningococcal disease may need reconsideration if resistance prevalence increases.
- Understanding resistance mechanisms is crucial for effective antimicrobial stewardship.
Related Concept Videos
Bacterial Meningitis
Atypical Pneumonia
Viral Meningitis
Cryptococcal Meningitis
Bacterial Meningitis I: Introduction
Bacterial Meningitis II: Pathophysiology

