Padaornary, P. . (2023) “Effectiveness of COVID-19 vaccines in preventing infection among high-risk contacts at Mae Sot district, Tak province”, Phetchabun Medical Journal . Phetchabun, Thailand, 3(2), pp. 140–8. available at: https://he03.tci-thaijo.org/index.php/PMJ/article/view/2992 (accessed: 7 April 2025).