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versión impresa ISSN 1025-028Xversión On-line ISSN 1025-0298


MARTINEZ, Isabel et al. Antimicrobial drug susceptibility of Neisseria meningitidis strains isolated from carriers. Vaccimonitor [online]. 2000, vol.9, n.2, pp.7-13. ISSN 1025-028X.

When it is necessary to determine the susceptibility of Neisseria meningitidis (Nm) strains to antimicrobial drugs, it is important to consider that it should be analyzed in a double context. One of them related to the use of drugs in a specific medical treatment; and the other; to chemoprophylatic drugs, both with the same purpose: the accurate selection of the “in vivo” antimicrobial agent. This requires the study of the sensitivity and resistance of strains isolated in both carriers and patients. With the aim of further studying the behavior of the strains that currently circulate in Cuba, an antimicrobial drug susceptibility study was conducted in 90 strains isolated from carriers during the first half of 1998. The agar dilution method was used to determine the minimum inhibitory concentrations (MICs) to: penicillin, ampicillin, rifampin, sulfadiazine, chloramphenicol, ciprofloxacin, ceftriaxone, cefotaxime. The study of the three latter drugs was done for the first time in our country. The search for β- lactamase-producer strains was also performed. There was a predominance of penicillin sensitive strains (82,2%) with an intermediate sensitivity to ampicillin (57,8%), while 70% of the strains were sensitive to sulfadiazine. Regarding the rest of the antimicrobial drugs, 100% of the strains were sensitive. The paper shows the MICs for each drug as well as the phenotypic characteristics of the strains with the penicillin and sulfadiazine sensitivity and resistance patterns. No β-lactamase-producer strains were found.

Palabras clave : N. meningitidis; susceptibility; resistance; antibiotics.

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