We have compiled a significant number of studies showing good hand hygiene curbs the spread of disease. Not only does it impact the spread of disease in hospitals it also curbs the spread in all environments humans dwell in. A good hand hygiene program in schools, offices and homes will curb the spread of disease.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7301780/
https://www.cdc.gov/handwashing/show-me-the-science-hand-sanitizer.html
https://www.ncbi.nlm.nih.gov/books/NBK513254/
https://jepha.springeropen.com/articles/10.1186/s42506-021-00094-x
https://www.rush.edu/news/does-hand-sanitizer-work
https://journals.asm.org/doi/10.1128/AAC.01498-09
https://journals.asm.org/doi/10.1128/mSphere.00062-21
https://www.nature.com/articles/s41370-022-00479-w
Hand hygiene makes a difference in the health of any community
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2446461/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3249958/
https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-021-11815-4
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0230573
Schools
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8457965/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6747304/
https://www.ajicjournal.org/article/S0196-6553(07)00595-0/fulltext
https://bmjopen.bmj.com/content/9/12/e030656
https://www.hindawi.com/journals/bmri/2016/7026169/
https://www.sciencedirect.com/science/article/pii/S019567012100102X
https://link.springer.com/article/10.1007/s15010-021-01626-5
https://www.jmu.edu/uwc/files/link-library/empirical/annotated_discussion_section.pdf