Social distancing and masks reduce risk of getting Covid-19, review finds

(Katie Hunt/ CNN) — Stay 6 feet apart and, while you’re at it, wear a face covering.

The “most comprehensive study to date” found that physical distance and perhaps the use of a mask were the two best ways to prevent transmission of the new coronavirus.

The new study, published in the Lancet medical journal Monday, found people should stay at least three feet apart and more if possible.
The review of various published studies, paid for by the World Health Organization, had three main findings:

  • Physical distancing: The chance of transmission at a distance of less than 1 meter (3.3 feet) was 12.8%, while that fell to 2.6% at a distance of more than 1 meter (3.3 feet). It added that distances of 2 meters (6.6 feet) could be more effective. It said that the certainty of the evidence was “moderate.”
  • Face masks: The chance of transmission without a face mask or respirator (like an N95 mask) was 17.4%, while that fell to 3.1% when a mask was worn. However, the certainty of the evidence was “low.” (…)
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