African Vaccinology Network (AfVANET): an African network by African scientists [Correspondence] - Lazarus, D.D.; Afolayan, F.I.D.; Mamo, G.; Dinga, J.N.; Akinbobola, J.; Duedu, K.O.; Tshifhiwa, N.; Kassa, T.; Nene, Vishvanath M.; Dieye, Y.; Oumouna, M. (Pan African Medical Journal, 2020)