La infección urinaria (ITU) es fácilmente manejada por el huésped normal pero puede causar problemas en pacientes inmunosuprimidos, requiriendo antimicrobianos en dosis bactericidas y no solo bacteriostáticas que aseguren tratamientos efectivos. En nuestro medio Ciprofloxacina es un antimicrobiano de uso frecuente en este tipo de infecciones, sin embargo no se evalúa de manera rutinaria el comportamiento de las cepas patógenas con respecto a parámetros microbiológicos como la Concentración Mínima Inhibitoria (CMI), menos aún la Concentración Mínima Bactericida (CMB). Objetivos: Determinar la relación entre la CMI y la CMB de Ciprofloxacina frente a gérmenes aislados a partir de ITU de pacientes hospitalizados y ambulatorios del INEN. Materiales y métodos: Se aislaron 132 cepas de bacilos gramnegativos uropatógenos aislados de consultorio externo y pacientes hospit...

Background: Staphylococcus aureus is an important pathogen envolved in many infections, and it has a greater impact because of its many virulence factors and antimicrobial resistance. Erythromycin-induced clindamycin resistance in S. aureus is an increasing problem in different parts of the world.Objectives: To determine the frequency of Erythromycin-induced clindamycin resistance in S. aureus isolates from three hospitals in Lima, Peru. To determine the presence of MRSA-MLSBi among these strains and their relationship with the biological origin of the resistant strains.Material and methods: 272 Staphyloccus aureus strains were isolated in Cayetano Heredia National Hospital, The National Institute for Cancer, and The Children National Health Institute between May 2005 and September 2006. Resistance to methycillin resistance was determined using the Oxacillin Agar Screen, a...

Background: Staphylococcus aureus is an important pathogen envolved in many infections, and it has a greater impact because of its many virulence factors and antimicrobial resistance. Erythromycin-induced clindamycin resistance in S. aureus is an increasing problem in different parts of the world.Objectives: To determine the frequency of Erythromycin-induced clindamycin resistance in S. aureus isolates from three hospitals in Lima, Peru. To determine the presence of MRSA-MLSBi among these strains and their relationship with the biological origin of the resistant strains.Material and methods: 272 Staphyloccus aureus strains were isolated in Cayetano Heredia National Hospital, The National Institute for Cancer, and The Children National Health Institute between May 2005 and September 2006. Resistance to methycillin resistance was determined using the Oxacillin Agar Screen, a...

Introducction: Pneumococcus is a major cause of morbidity and mortality in children in developing countries. Over the last few years, pneumococcal strains resistant to penicillin and other antibiotics commonly used in pediatrics have emerged. There are few recent local studies that describe this problem.Objectives: The main purpose of the study was to determine the pneumococcal resistance rates in healthy nasopharyngeal carriers 2 to 12 months of age, who attended the outpatient clinic for a routine well child and/ or vaccination visit at Cayetano Heredia, Edgardo Rebagliati, San Bartolomé Hospitals and Instituto Nacional de Salud del Niño in Lima-Peru.Methods: Nasopharyngeal samples were obtained from 400 children (November 2007-June 2008) for S. pneumoniae culture and determination of the susceptibility to penicillin and other antibiotics by disk diffusion.Results:&nbs...

Introducction: Pneumococcus is a major cause of morbidity and mortality in children in developing countries. Over the last few years, pneumococcal strains resistant to penicillin and other antibiotics commonly used in pediatrics have emerged. There are few recent local studies that describe this problem.Objectives: The main purpose of the study was to determine the pneumococcal resistance rates in healthy nasopharyngeal carriers 2 to 12 months of age, who attended the outpatient clinic for a routine well child and/ or vaccination visit at Cayetano Heredia, Edgardo Rebagliati, San Bartolomé Hospitals and Instituto Nacional de Salud del Niño in Lima-Peru.Methods: Nasopharyngeal samples were obtained from 400 children (November 2007-June 2008) for S. pneumoniae culture and determination of the susceptibility to penicillin and other antibiotics by disk diffusion.Results:&nbs...