1. Unit Virology, Microbiology Laboratory, Charles Nicolle University Hospital, Tunis, Tunisia.
2. Laboratory of Research “resistance to antibiotics,” Faculty of Medicine of Tunis, Tunis, Tunisia.
3. The Global Fund to Fight AIDS, Tuberculosis and Malaria, Geneva, Switzerland.
4. HIV Biology and Variability Unit, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain.
5. Infectious Diseases Department, Rabta University Hospital, Tunis, Tunisia.
6. Infectious Diseases Department, Farhat Hached University Hospital, Sousse, Tunisia.
7. Infectious Diseases Department, Fatouma Bourguiba University Hospital, Monastir, Tunisia.
8. Infectious Diseases Department, Hedi Chaker University Hospital of Sfax, Sfax, Tunisia.
9. Primary Health Care Directory (DSSB), Ministry of Health, Tunis, Tunisia.
10. National Office of Family and Population, Tunis, Tunisia.