PMID: 9523479Apr 2, 1998Paper

Resistance to antibiotics of Streptococcus pneumoniae strains

Polski merkuriusz lekarski : organ Polskiego Towarzystwa Lekarskiego
G JanickaE Kruszyńska

Abstract

Streptococcus pneumoniae strains are exhibiting increasing rates of antibiotics resistance. A rapid increase of resistance was seen not only to penicillin but also other antimicrobial agents and therefore this paper describes the study of resistance and multiresistance of pneumococci to 7 antibiotics: penicillin (P), erythromycin (E), clindamycin (CC), tetracycline (T), co-trimoxazole (SXT), cefotaxime (CTX) and vancomycin (Va), using the disk-diffusion technique according to NCCLS procedure. We tested a total of 218 S. pneumoniae strains isolated from various materials: from sputum (54), noses (117), throats (28) and different swabs specimens (19). The overall percentage of resistant isolates to penicillin was 3.7%, to erythromycin--4.1%, to clindamycin--10.6%, to tetracycline--17.4%, to co-trimoxazole--15.6%, to cefotaxime--2.3%. In the sputum was most the monoresistant strains (66.7%). The multiresistance was highest in the penicillin resistant pneumococci. With the exception of vancomycin, the number of resistant strains to non-beta-lactam antibiotics (erythromycin, clindamycin, tetracycline, co-trimoxazole) was higher in penicillin-resistant strains compared with penicillin susceptible isolates. All isolates were susceptib...Continue Reading

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