Study finds mask wearing does reduce Covid transmission riskpublished at 07:16 British Summer Time 22 May 2020
Research from the University of Edinburgh suggests wearing a face mask reduces the forward distance travelled by an exhaled breath by more than 90%
Scientists testing the effectiveness of seven types of face covering – including medical-grade and home-made masks – found that they could all potentially help limit the spread of Covid-19.
However, some of the masks enabled strong jets of air to escape from the back and sides, which could pose a risk if a wearer turns their head suddenly, or if someone is walking behind them.
Quote MessageI have generally been impressed by the effectiveness of all the face coverings we tested. However, we discovered that some face coverings allow the emergence of downward or backward jets that people are not aware of and that could be a major hazard to others around them.”
Dr Ignazio Maria Viola, University of Edinburgh’s School of Engineering