Diagnostics for detection and surveillance of priority epidemic-prone diseases in Africa: an assessment of testing capacity and laboratory strengthening needs oleh Aytenew Ashenafi, Olajumoke Sule, Trevor Peter, Silver Mashate, Osborn Otieno, Abebaw Kebede, John Oio, Kekeletso Kao, Jane Carter, Toni Whistler, Nqobile Ndlovu, Yenew Kebede