Futrakul, S., Prompukdee, B., Thuybungchim , S., Simmatan, S., Chaiarch, K. and Yotha, N. 2022. Universal behavior prevention assessment against corona virus infection and covid-19 vaccination of people in Khon kaen province . Journal of the Office of Disease Prevention and Control 9 Nakhon Ratchasima. 28, 2 (May 2022), 5–14.