The population as a whole
In 2011, a systematic review explored whether physical interventions could reduce the transmission of respiratory viruses. They found that frequent handwashing, plus wearing gloves, gowns and masks could reduce the spread. Evidence was insufficient to support screening at entry ports or keeping social distancing to reduce respiratory infections spread.17 This is potentially an important piece of evidence in terms of how COVID-19 virus person to person spread is managed from here in the population at large.