Hand washing helped a bit


Dr. John Campbell

Hand hygiene is likely to modestly reduce the burden of respiratory illness.

Harms associated with physical interventions were under‐investigated. There is a need for large, well‐designed RCTs addressing the effectiveness of many of these interventions in multiple settings and populations, as well as the impact of adherence on effectiveness, especially in those most at risk of ARIs.

Physical measures, prevent respiratory viruses spreading between people