Shaukat, A., Hussain, K. and Shehzadi, N. (2021) “COVID-19 vaccines: Development, strategies, types and vaccine usage hesitancy”, VacciMonitor, 30(3), pp. 145-152. Available at: https://vaccimonitor.finlay.edu.cu/index.php/vaccimonitor/article/view/279 (Accessed: 10October2026).