I expected to find more than this and will be interested to see what other members suggest:
Bloomfield, S. F., Aiello, A. E., Cookson, B., O'Boyle, C., & Larson, E. L. (2007). The effectiveness of hand hygiene procedures in reducing the risks of infections in home and community settings including handwashing and alcohol-based hand sanitizers. American Journal of Infection Control, 35(10), S27-S64.
Felemban, O., St John, W., & Shaban, R. Z. (2015). Infection prevention and control in home nursing: case study of four organisations in Australia. British journal of community nursing, 20(9).
http://www.ncbi.nlm.nih.gov/pubmed/26322993
I have the full text if you are unable to access it.
This is a meta-analysis:
Aiello, A. E., Coulborn, R. M., Perez, V., & Larson, E. L. (2008). Effect of hand hygiene on infectious disease risk in the community setting: a meta-analysis. American journal of public health, 98(8), 1372-1381.
. . . and this systematic review might be of interest:
Curtis, V., & Cairncross, S. (2003). Effect of washing hands with soap on diarrhoea risk in the community: a systematic review. The Lancet infectious diseases, 3(5), 275-281.