Muriu, N., J. Onditi, S. Kosgei, J. Kokumu, Y. Opanga, R. Mwende, M. Gituanja, N. Wangari, K. Munene, J. Maina, B. King’ori, C. Mumbi, N. Gicheru, and E. Wachira. “Last Mile Delivery of COVID-19 Vaccination to Populations Aged 15 Years and above in Nyeri County, Kenya, March 2021-June 2022”. East African Journal of Health and Science, Vol. 8, no. 2, Aug. 2025, pp. 223-39, doi:10.37284/eajhs.8.2.3442.