Dwi Santosa, Maria Yuliana, Budi Prasetyo, and Rina Hartati. “The Effectiveness Of Vaccination Programs in Controlling Infectious Diseases in Low-Income Countries”. International Journal of Public Health 1, no. 1 (March 31, 2024): 01–05. Accessed May 9, 2025. https://international.arikesi.or.id/index.php/IJoPH/article/view/141.