NeuroSci · 2026
Age-Specific Antibiograms for Bacterial Meningitis Pathogens Based on Isolates Collected in a Community Laboratory.
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Zurowski Alexsa J, Yeung Eugene Y H
Аннотация
BACKGROUND: Creating antibiograms solely for adults may overestimate resistance of antimicrobials for certain pathogens in children. The Canadian Paediatric Society comments that areas with no cephalosporin-resistant Streptococcus pneumoniae cases should consider ceftriaxone or cefotaxime monotherapy for meningitis, despite most experts recommending adding vancomycin. The present study created age-specific antibiograms using LifeLabs data to report incidences of resistant bacterial meningitis pathogens at the regional level to determine the need for duo-coverage.
METHODS: Data of common bacterial meningitis pathogen susceptibility was collected from 1 January 2023 to 31 December 2024, in the LifeLabs community laboratory on Vancouver Island.
RESULTS: Most Streptococcus pneumoniae isolates (78/83) were susceptible to ceftriaxone using the meningitis breakpoint; the remaining five isolates showed intermediate susceptibility to ceftriaxone. There was a significant difference when comparing S. pneumoniae susceptibility using penicillin-meningitis and penicillin-non-meningitis breakpoints (82% vs. 99%, respectively; p < 0.05). There was a significant difference between the three age groups (<18 years, 18-50 years, >50 years) when analyzing ciprofloxacin susceptibility of isolates [82% (n = 462), 77% (n = 2452), 75% (n = 8352), respectively, p < 0.05].
CONCLUSIONS: Ceftriaxone should remain the drug of choice for community-acquired bacterial meningitis and might be sufficient as a monotherapy for pneumococcal meningitis on Vancouver Island. The age-specific differences in E. coli susceptibilities to ciprofloxacin showed the importance of age-specific antibiograms.
METHODS: Data of common bacterial meningitis pathogen susceptibility was collected from 1 January 2023 to 31 December 2024, in the LifeLabs community laboratory on Vancouver Island.
RESULTS: Most Streptococcus pneumoniae isolates (78/83) were susceptible to ceftriaxone using the meningitis breakpoint; the remaining five isolates showed intermediate susceptibility to ceftriaxone. There was a significant difference when comparing S. pneumoniae susceptibility using penicillin-meningitis and penicillin-non-meningitis breakpoints (82% vs. 99%, respectively; p < 0.05). There was a significant difference between the three age groups (<18 years, 18-50 years, >50 years) when analyzing ciprofloxacin susceptibility of isolates [82% (n = 462), 77% (n = 2452), 75% (n = 8352), respectively, p < 0.05].
CONCLUSIONS: Ceftriaxone should remain the drug of choice for community-acquired bacterial meningitis and might be sufficient as a monotherapy for pneumococcal meningitis on Vancouver Island. The age-specific differences in E. coli susceptibilities to ciprofloxacin showed the importance of age-specific antibiograms.