Jefferson, T., Foxlee, R., Del Mar, C. et al. (2008). Physical Interventions to Interrupt or Reduce the Spread of Respiratory Viruses: Systematic Review. BMJ. 336(7635):77-80.
The authors report findings from a literature review on physical interventions to reduce or interrupt the spread of respiratory viruses, such as isolation, quarantine, social distancing, barriers, personal protection, and hygiene. They found that handwashing more than 10 times daily; wearing gowns, gloves, masks, and/or N-95 masks were effective. They also found that hygiene measures directed at children helped contain viral spread in the community.