Hallan quesos con materia fecal y resistentes a los antibióticos
Fecha
2024-06
Autores
Núñez Zúñiga, Johnny
Título de la revista
ISSN de la revista
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Editor
Oficina de Comunicación, Universidad Nacional
Resumen
Una investigación realizada por el laboratorio de Salud Pública y Alimentos de la Escuela de Medicina Veterinaria de la Universidad Nacional (EMV-UNA) determinó la frecuencia de Escherichia coli (E. coli), un indicador de contaminación fecal, así como resistencia antibiótica en quesos frescos comercializados en todos los expendios ubicados en mercados municipales de los cantones centrales de las siete provincias del país. San José registró el mayor número de muestras positivas.
Lohendy Muñoz Vargas, coordinadora del laboratorio de Salud Pública de la EMV-UNA, explicó que se sometieron a un análisis fenotípico 176 muestras de quesos, y se identificaron 84 muestras con crecimiento de colonias compatibles con E. coli, las cuales luego fueron confirmadas por pruebas bioquímicas y moleculares; es decir, alrededor de 48% de los quesos analizados registraron tener esta bacteria.
An investigation conducted by the Public Health and Food laboratory of the School of Veterinary Medicine of the National University (EMV-UNA) determined the frequency of Escherichia coli (E. coli), an indicator of fecal contamination, as well as antibiotic resistance in fresh cheeses sold in all the outlets located in municipal markets in the central cantons of the seven provinces of the country. San José registered the highest number of positive samples. Lohendy Muñoz Vargas, coordinator of the Public Health laboratory of the EMV-UNA, explained that 176 cheese samples were subjected to a phenotypic analysis, and 84 samples were identified with colony growth compatible with E. coli, which were later confirmed by biochemical and molecular tests; that is, about 48% of the cheeses analyzed were found to have this bacterium.
An investigation conducted by the Public Health and Food laboratory of the School of Veterinary Medicine of the National University (EMV-UNA) determined the frequency of Escherichia coli (E. coli), an indicator of fecal contamination, as well as antibiotic resistance in fresh cheeses sold in all the outlets located in municipal markets in the central cantons of the seven provinces of the country. San José registered the highest number of positive samples. Lohendy Muñoz Vargas, coordinator of the Public Health laboratory of the EMV-UNA, explained that 176 cheese samples were subjected to a phenotypic analysis, and 84 samples were identified with colony growth compatible with E. coli, which were later confirmed by biochemical and molecular tests; that is, about 48% of the cheeses analyzed were found to have this bacterium.
Descripción
Entrevista a la Dra. Lohendy Muñoz Vargas
Palabras clave
ESCHERICHIA COLI, CONTAMINACION FECAL, QUESOS, ANTIBIÓTICOS, RESISTENCIA A MEDICAMENTOS, FECAL CONTAMINATION, CHEESE, ANTIBIOTICS, DRUG RESISTANCE