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During 1992 (June to December), a diphtheria epidemic occurred in the port of Buenaventura, Valle, on Colombia's Pacific coast. A total of 88 patients were detected; 51 were studied bacteriologically toxigenic C. diphtheriae was isolated in 28 (54.9%) patients; 4 (7.8%) carried nontoxigenic C. diphtheria, and in 5 (98%) nontoxigenic C. pseudodiphtheriticum was cultured from the 28 patients with toxigenic C. diphtheriae were females with ages between 11 to 15 year old. The sensibility to antibiotics was tested, and all isolates were resistant to tetracycline.

Fabio Carmona, Profesor Titular, Departamento de Microbiología, Facultad de Salud, Universidad del Valle, Cali, Colombia

Profesor Titular, Departamento de Microbiología, Facultad de Salud, Universidad del Valle, Cali, Colombia

Graciela Barona, 2. Profesional Especializada, Departamento de Microbiología, Facultad de Salud, Universidad del Valle, Cali, Colombia.

Profesional Especializada, Departamento de Microbiología, Facultad de Salud, Universidad del Valle, Cali, Colombia.

Eunice de Alvarez, 3. Bacterióloga

Bacterióloga, Laboratorio de Salud Pública Departamental, Cali, Colombia.

Miryam Astudillo, Profesora Asociada, Departamento de Microbiología, Facultad de Salud, Universidad del Valle, Cali, Colombia.

Profesora Asociada, Departamento de Microbiología, Facultad de Salud, Universidad del Valle, Cali, Colombia.

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