Incidence, epidemiology, and characteristics of quinolone-nonsusceptible Streptococcus pneumoniae in Croatia.

Among 585 Streptococcus pneumoniae strains isolated in 22 Croatian hospitals 21 strains (3.6%) were quinolone nonsusceptible. MICs of all quinolones were high for seven strains tested with the same serotype (23F) and mutations in gyrA, parC, and parE.

Surveillance for antimicrobial resistance in Croatia.

We describe the activities of the Croatian Committee for Antibiotic Resistance Surveillance and report surveillance results for 1999. Twenty-two Croatian microbiology laboratories participated in the study. Resistance rates for the organisms isolated in different centers varied widely, but certain trends were apparent.