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23rd September 2020
11:39am BST

"Judging from the results of the simulation, unfortunately the effectiveness of face guards in preventing droplets from spreading from an infected person’s mouth is limited compared with masks.
"This is especially true for small droplets of less than 20 micrometres. At the same time, it somehow works for the droplets larger than 50 micrometres."
https://twitter.com/PoliticsJOE_UK/status/1308400609238953985?s=20 Though governments around the world have implemented a number of guidelines advising or enforcing the wearing of face masks in certain public areas, face shields have often been worn by staff working in the retail or hospitality industry. On Tuesday of this week, Boris Johnson announced tighter coronavirus restrictions to try and halt the recent surge in cases. As part of these new measures, people found to not be wearing face masks in required public locations could face fines of up to £200.Explore more on these topics:

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