A. Kima, ECOWAS-Regional Centre for Surveillance and Diseases Control , appokima@gmail.com
B. Fall, ECOWAS-Regional Centre for Surveillance and Diseases Control, bfall@rcdc.wahooas.org 
S. M. Catraye, ECOWAS-Regional Centre for Surveillance and Diseases Control, scatraye@rcdc.wahooas.org 
V. K. Lokossou, ECOWAS-Regional Centre for Surveillance and Diseases Control, vlokossou@wahooas.org 
F. Agbla, Organisation Ouest Africaine de la Santé, fagbla@wahooas.org
Issiaka Sombie, Organisation Ouest Africaine de la Santé, isombie@wahooas.org
Melchior Aissi, Organisation Ouest Africaine de la Santé, maissi@wahooas.org