Phupat, Pailin, S Sittisak, K Pimrat, K Junti, T Jivapaisarnpong, W Paveenkittiporn, and C Pittayawonganon. “Epidemiological and Serological Study of Re-emerging Diphtheria in Dansai District, Loei Province, Thailand, June to October 2012”. Outbreak, Surveillance, Investigation & Response (OSIR) Journal 8, no. 1 (March 30, 2015): 13–21. accessed October 4, 2026. https://he02.tci-thaijo.org/index.php/OSIR/article/view/263281.