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A new report advocating the widespread use of face masks to prevent coronavirus transmission has become the topic of discussion among scientists.
According to Delve, a multidisciplinary group convened by the Royal Society report published Monday, face masks could reduce coronavirus transmissions if widely used in situations where physical distancing is not possible, such as busy public transportation, shopping areas or workspaces.
But as it seems, the recommendation contrasts with the standard use of masks for the protection of users, suggesting that facial coatings may hinder transmission in carriers without symptoms.
The report has led other scientists to express their reservations, warning that it was merely an opinion and exaggerating the available evidence.
The report is based on an analysis of three key considerations, including the role of droplets as a transmission route and whether masks can help reduce droplet dispersion.
Many fear that the evidence base is insufficient to justify such conclusions.
“Our analysis suggests that its use could reduce forward transmission by asymptomatic and pre-symptomatic users if it is widely used in situations where physical distance is not possible or predictable, in contrast to the standard use of masks for the protection of users. If used correctly at this base, face masks, including homemade cloth masks, can help reduce viral transmission, “the report noted.
Experts say the report “provides no new evidence and overrides the precautionary principle in addressing the possibility that masks and covers may have negative effects on people’s behavior.”
“This does not mean that facial coatings may not be useful. But the report does not accurately represent the evidence on facial coatings that currently exists,” said one expert.
Another expert said, “That is not a piece or research. It is an unsystematic review of anecdotal and non-clinical studies.”
However, a professor at Oxford University welcomed the report and said it adds weight to the argument that covers by the general public could be part of a route out of the lockdown.
“Medical grade masks are not necessary outside of healthcare settings. A cloth mask provides very good protection and is more comfortable to wear,” he said.
“Until more evidence is presented in either direction, all advice can be based on opinion,” one expert concluded.
