COVID-19 transmission dynamics and the impact of vaccination: modelling, analysis and simulations oleh Joseph Malinzi, Victor Ogesa Juma, Chinwendu Emilian Madubueze, John Mwaonanji, Godwin Nwachukwu Nkem, Elias Mwakilama, Tinashe Victor Mupedza, Vincent Nandwa Chiteri, Emmanuel Afolabi Bakare, Isabel Linda-Zulu Moyo, Eduard Campillo-Funollet, Farai Nyabadza, Anotida Madzvamuse