The proportion of penicillin-resistant Streptococcus pneumoniae (PRSP) accounted for approximately 40% of all detected pneumococcus in cerebrospinal fluid (CSF) samples, though the figure varies from year to year, because only around 100 CSF samples are tested. The proportion of PRSP was low for non-CSF samples at below 1%, and below 5% even adding penicillin intermediate resistant bacteria.
Figures in parentheses indicate the number of bacterial strains that were tested for antimicrobial susceptibility.
* Each figure for PCG represents the sum of resistance (R: 8 μg/mL) and intermediate resistance (I: 4 μg/mL).
CLSI (2012)(M100-S22) Criteria was applied to determine BP.
"Source: Nippon AMR One Health Report (NAOR) 2018"