Elaine Okanyene Nsoesie1, Olubusola Oladeji2, Moinina David Sengeh3. 1. Department of Global Health, Boston University School of Public Health, Boston, MA, USA. Electronic address: onelaine@bu.edu. 2. Department of Global Health, Boston University School of Public Health, Boston, MA, USA. 3. Directorate of Science, Technology and Innovation, Freetown, Sierra Leone.