Abstract
Abstract
Clinical and Laboratory Standards Institute changed penicillin susceptibility breakpoints for Streptococcus pneumoniae in 2008. After reevaluation with new breakpoints, resistance rates decreased from 6.1% to 0.5% for nonmeningitis and increased from 6.6% to 33.3% for meningitis isolates in our hospital. This breakpoint modification is expected to reduce the inconsistency between susceptibility results and therapeutic outcomes; however, both the clinical microbiology laboratories and the clinicians should be aware of the change to interpret the susceptibility results.
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