Incidence of penicillin-resistant Streptococcus pneumoniae
Sensitivity to penicillin G of 190 Streptococcus pneumoniae strains detected by sputum culture from January 2006 to December 2011 was investigated using old criteria (PSSP: 0.06 μ g/ml or less, PISP: 0.12~1μg/ml, PRSP: 2μg/ml or greater) and new criteria (without meningitis) (PSSP: 2 μ g/ml or less, PISP: 4μg/ml, PRSP: 8μg/ml or greater). The results by the old criteria were PSSP: 43.2%, PISP: 44.7%, and PRSP: 12.1%, whereas the results by the new criteria were PSSP: 97.4%, PISP: 2.1 %, and PRSP: 0.5%. Based on the above, it was concluded that the majority of S. pneumoniae from sputum were penicillin-sensitive strains. (Accepted on May 23, 2012)