[1] Monto AS, Sullivan KM. Acute respiratory illness in the community. Frequency of illness and the agents involved. Epidemiol Infect, 1993; 110, 145−60. doi:  10.1017/S0950268800050779
[2] Siegel JD, Rhinehart E, Jackson M, et al. 2007 Guideline for isolation precautions: preventing transmission of infectious agents in health care settings. Am J Infect Control, 2007; 35, S65−164. doi:  10.1016/j.ajic.2007.10.007
[3] Liang MM, Gao L, Cheng C, et al. Efficacy of face mask in preventing respiratory virus transmission: a systematic review and meta-analysis. Travel Med Infect Dis, 2020; 36, 101751. doi:  10.1016/j.tmaid.2020.101751
[4] WHO. Advice for the public: coronavirus disease (COVID-19). https://www.who.int/emergencies/diseases/novel-coronavirus-2019/advice-for-public. [2022-05-10].
[5] World Health Organization. Non-pharmaceutical public health measures for mitigating the risk and impact of epidemic and pandemic influenza: annex: report of systematic literature reviews. Geneva: World Health Organization, 2019.
[6] Gu J, Zhong Y, Hao YT, et al. Preventive behaviors and mental distress in response to H1N1 among university students in Guangzhou, China. Asia Pac J Public Health, 2015; 27, NP1867−79. doi:  10.1177/1010539512443699
[7] Sun C, Wang QZ, Poudel Adhikari S, et al. Correlates of school children’s handwashing: a study in Tibetan primary schools. Int J Environ Res Public Health, 2019; 16, 3217. doi:  10.3390/ijerph16173217
[8] Mohammadi M, Dalvandi A, Chakeri A. A study of handwashing training effects on awareness, attitude, and handwashing skills of third grade elementary school students. J Family Med Prim Care, 2020; 9, 1149−53. doi:  10.4103/jfmpc.jfmpc_948_19
[9] Vivas AP, Gelaye B, Aboset N, et al. Knowledge, attitudes and practices (KAP) of hygiene among school children in Angolela, Ethiopia. J Prev Med Hyg, 2010; 51, 73−9. doi:  10.1016/j.ypmed.2010.04.005