RESUMEN
Between July 1983 and December 1987, 13,108 strains of enterobacteriaceae were isolated at Charles Nicolle Hospital in Tunis. This study reports the prevalence of different species isolated, their resistance and the evolution of bacterial resistance during that period. There appeared to be a great stability in the distribution of bacterial groups. Among the commonly sensitive species, Proteus mirabilis showed a high proportion of strains resistant to ampicillin (79.3%), carbenicillin (75.9%), cefalotin (73.8%) and gentamicin (46%). The proportions of resistant strains in P. mirabilis were much the same for each successive year from 1983 to 1987, and the percentages of resistant strains in the majority of the bacterial species were similarly stable. Amikacin and cefotaxime remained the most active antibiotics against enterobacteriaceae.
Asunto(s)
Farmacorresistencia Microbiana , Enterobacteriaceae/aislamiento & purificación , Enterobacteriaceae/clasificación , Enterobacteriaceae/efectos de los fármacos , Factores de Tiempo , TúnezRESUMEN
50 strains of viridans streptococci isolated from human material are identified by biochemical tests (bile esculin, Cl Na 6,5%, acid production from lactose, mannitol, sorbitol, inulin, arginine, esculin and starch hydrolysis; production of levan and dextran in sucrose media) Streptococcus salivarius and Streptococcus mitis are predominant species. Susceptibility to antibiotics was studied: 70% of viridans streptococci were susceptible to all antibiotics tested, high level resistance to aminoglycoside was not present. The only resistance observed were to tetracycline, macrolides and related drugs.
Asunto(s)
Antibacterianos/farmacología , Streptococcus/clasificación , Aminoglicósidos , Técnicas de Tipificación Bacteriana , Farmacorresistencia Microbiana , Humanos , Resistencia a las Penicilinas , Penicilinas/farmacología , Streptococcus/efectos de los fármacos , Streptococcus/aislamiento & purificación , Streptococcus mutans/clasificación , Streptococcus mutans/efectos de los fármacos , Streptococcus mutans/aislamiento & purificación , Streptococcus sanguis/clasificación , Streptococcus sanguis/efectos de los fármacos , Streptococcus sanguis/aislamiento & purificación , Resistencia a la Tetraciclina , TúnezRESUMEN
197 strains of enterococcus and group D Streptococcus were isolated from human material at Charles Nicolle Hospital (Tunis) and identified by biochemical tests: 174, Enterococcus faecalis, 6 Enterococcus faecium, 2 Enterococcus durans and 15 Streptococcus bovis. The sensitivity to antibiotics was studied: all Enterococcus faecium were resistant at least to one antibiotic, 15% of Enterococcus faecalis were sensitive for all antibiotics tested the other species were frequently sensitive. High level resistance to aminoglycosides were frequent in Enterococcus faecalis 40%: among these strains high level resistance to gentamicin accounts for 12% and 18 frequently associated with resistance to kanamycin and streptomycin, this situation present therapeutic problems in case of severe infection.