Epidemiology of COVID-19 infections on routine polymerase chain reaction (PCR) and serology testing in Coastal Kenya by Nyagwange, J, Ndwiga, L, Muteru, K, Wamae, K, Tuju, J, Testing Team, C, Kutima, B, Gitonga, J, Karanja, H, Mugo, D, Kasera, K, Amoth, P, Murunga, N, Babu, L, Otieno, E, Githinji, G, Nokes, DJ, Tsofa, B, Orindi, B, Barasa, E, Warimwe, G, Agoti, CN, Bejon, P, Ochola-Oyier, LI