Global Journal of Medical Research, F: Diseases, Volume 23 Issue 2

syndrome. Lancet Respir Med, 8(4), 420-422. https://doi.org/10.1016/s2213-2600 (20)30076-x 28. Yoda, T., & Katsuyama, H. (2021, Dec 2). Parents' hesitation about getting their children vaccinated against COVID-19 in Japan. Hum Vaccin Immunother, 17(12), 4993-4998. https://doi.org/ 10.1080/21645515.2021.1981087 29. Zhou, P., Yang, X. L., Wang, X. G., Hu, B., Zhang, L., Zhang, W., Si, H. R., Zhu, Y., Li, B., Huang, C. L., Chen, H. D., Chen, J., Luo, Y., Guo, H., Jiang, R. D., Liu, M. Q., Chen, Y., Shen, X. R., Wang, X., Zheng, X. S., Zhao, K., Chen, Q. J., Deng, F., Liu, L. L., Yan, B., Zhan, F. X., Wang, Y. Y., Xiao, G. F., & Shi, Z. L. (2020, Mar). A pneumonia outbreak associated with a new coronavirus of probable bat origin. Nature, 579(7798), 270-273. https://doi.org/10.1038/s41586- 020-2012-7 Table 1: Characteristics Chlorine dioxide releasing agent Number of Elementary Schools Number of students per elementary school Total Median 25th 75th Not used 68 34,810 466 279 668 Used 96 38,714 332 236 526 Table 2: Odds ratio for incident COVID-19 CD gas-releasing agent COVID-19 Odds ratio 95%CI p -value Number of Incidences Number of Controls Not used 4,787 30,023 Reference - Used 5,019 33,695 0.934 0.895-0.975 0.0017 5 Year 2023 Global Journal of Medical Research Volume XXIII Issue II Version I ( D ) F © 2023 Global Journals Relationship between COVID-19 and use of Chlorine Dioxide Gas-Releasing Agents in Elementary Schools