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.