1 Faculty of Medical Sciences, African Centre of Excellence in the Prevention and Control of Communicable Diseases, University of Conakry, Conakry, Guinea drdelphinkolie88@gmail.com.
2 Ministry of Health, Centre National de Formation et de Recherche en Santé Rurale de Maferinyah, Conakry, Guinea.
3 Department of Public Health, Institute of Tropical Medicine of Antwerp, Antwerpen, Belgium.
4 Faculty of Medical Sciences, African Centre of Excellence in the Prevention and Control of Communicable Diseases, University of Conakry, Conakry, Guinea.