High SARS-CoV-2 incidence and asymptomatic fraction during Delta and Omicron BA.1 waves in The Gambia oleh Sheikh Jarju, Rhys D. Wenlock, Madikoi Danso, Dawda Jobe, Ya Jankey Jagne, Alansana Darboe, Michelle Kumado, Yusupha Jallow, Mamlie Touray, Ebrima A. Ceesay, Hoja Gaye, Biran Gaye, Abdoulie Tunkara, Sheriff Kandeh, Marie Gomes, Ellen Lena Sylva, Fatoumata Toure, Hailey Hornsby, Benjamin B. Lindsey, Martin J. Nicklin, Jon R. Sayers, Abdul K. Sesay, Adam Kucharski, David Hodgson, Beate Kampmann, Thushan I. de Silva