1. Rubella and Parvovirus Laboratory, Institute of Virology ‘‘Dr. J. M. Vanella,’’ Faculty of Medical Sciences, National University of Córdoba, Córdoba, Argentina.
2. Virology Department, Foundation for the Progress of Medicine, Córdoba, Argentina.
3. Laboratory of Viral Gastroenteritis and Measles, Institute of Virology ‘‘Dr. J. M. Vanella,’’ Faculty of Medical Sciences, National University of Córdoba, Córdoba, Argentina.
4. Virology Laboratory, Catholic University of Córdoba, Reina Fabiola University Clinic, Córdoba, Argentina.
5. Laboratory Department, Misericordia Hospital, Córdoba, Argentina.
6. Director of the Institute of Virology, Institute of Virology ‘‘Dr. J. M. Vanella,’’ Faculty of Medical Sciences, National University of Córdoba, Córdoba, Argentina.