Handwashing reduces the spread of respiratory infections
Regular hand hygiene meaningfully lowers the risk of acute respiratory infection.
AI review of the sources below, no human approval · Reviewed
This verdict was generated by AI from the papers listed on this page and published without human sign-off. AI can misread or miss studies — check the sources yourself. Not medical advice.
What the research says
Cochrane's review of physical interventions to interrupt respiratory virus spread found that hand hygiene reduced acute respiratory illness by roughly 11% compared with control, pooled across community trials. The effect is consistent even though individual trials vary in compliance and setting.
Caveats
- Effect sizes depend heavily on compliance, which is low in most real-world settings.
- Handwashing complements, rather than replaces, ventilation and vaccination.
Evidence
- Systematic reviewCochrane Database of Systematic Reviews·2023
Physical interventions to interrupt or reduce the spread of respiratory viruses
Hand hygiene probably reduces the risk of acute respiratory illness by about 11%.
Read the source
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This page summarises published research for general information. It is not medical advice — talk to a clinician about your own situation.