OBJECTIVE: To determine the current levels of in vitro resistance of Vibrio cholerae strains against different antimicrobial agents. MATERIALS AND METHODS: The in vitro resistance of 225 Vibrio cholerae strains isolated from stool cultures taken from patients at the "Hospital Nacional Daniel A. Carrión" and other health care centers of Callao, Peru, as part of the Epiderniologic Surveillance of the Acute Diarrheic Diseases and Cholera Programme,was assessed by disc-difusion method. RESULTS: Resistance patterns obtained were the following: 24,7% to ampicillin, 18,7% to tetracyclin, 8% to cotrirnoxazol, 7,5% to cephalotin, 5% to cloramphenicol, 2,25% to furazolidone, 1 % to nalidixic acid, 0,5% to norfloxacin and no resistance was observed to ciprofioxacin. It was also found 17,3% of cases with resistance to 2 or more antimicrobial agents. CONCLUSIONS: Antimicrobial resistance patterns of...

Objectives: To identify isolated S. pneumoniae serotypes correlating them with those covered by existing vaccines and determining antimicrobial resistance. Design: Descriptive, observational and longitudinal study. Setting: Daniel A Carrion Tropical Medicine Institute, School of Medicine, UNMSM. Biologic material: Streptococcus pneumoniae stocks. Interventions: Forty Streptococcus pneumoniae stocks isolated between 2002 and 2006 were serotyped at Carlos III Health Institute in Madrid, Spain; 15 were invasive, 11 isolated from localized infections, 6 from carriers and 8 were multiresistant. Main outcome measures: Protection of local existing vaccines to Streptococcus pneumoniae infections. Results: There were 14 different serotypes and most identified groups were 23, 19 and 6, 28,6% contained in the 7–valent vaccine, 42,9% in the 9-valent, 50% in the 11-valent and 71,4% in the 23-valent...