Muhammed , A.-A. , Humado, P. , Ozogbo, S. , Solarin, T. , Afolayan, A. , Alugba, G. , Sambo, A. , Okafor, N. , Rathore, S. and Ayantayo, R. 2021. Covid-19 Vaccines, Countries around the World, and the Vaccines they are Currently Administering: A Practical Insight and Narrative Review. International Journal of Sciences: Basic and Applied Research (IJSBAR). 60, 2 (Sep. 2021), 162–174.