Lagat, Daniel. “A SWOT Analysis of COVID-19 Human Challenge Trials in Light of Christian Ethics: Is Infecting Healthy Humans With Coronavirus in Order to Develop Vaccines Ethical?”. Pan-African Journal of Health and Environmental Science 2, no. 1 (June 29, 2023). Accessed January 9, 2025. https://journals.aua.ke/ajhes/article/view/294.