COVID-19 testing in Africa: lessons learnt - Ondoa, Pascale; Kebede, Yenew; Loembe, Marguerite Massinga; Bhiman, Jinal N; Tessema, Sofonias Kifle; Sow, Abdourahmane; Sall, Amadou Alpha; Nkengasong, John (The Lancet. Microbe, 2020)