Comparative viral frequency in Mexican children under 5 years of age with and without upper respiratory symptoms

M E Manjarrez1, D P Rosete1, M Rincón1

  • 1Departamento de Investigación en Virología, Instituto Nacional de Enfermedades Respiratorias (INER), México DF 14080, Mexico 2Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), México DF 04510, Mexico.

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