At the moment, 2 p.c of the Danish inhabitants was contaminated — a charge decrease than that in lots of locations in the USA and Europe as we speak. Social distancing and frequent hand-washing have been widespread, however masks weren’t.
About 4,860 members accomplished the research. The researchers had hoped that masks would reduce the an infection charge by half amongst wearers. As an alternative, 42 folks within the masks group, or 1.eight p.c, bought contaminated, in contrast with 53 within the unmasked group, or 2.1 p.c. The distinction was not statistically important.
“Our research offers a sign of how a lot you acquire from carrying a masks,” stated Dr. Henning Bundgaard, lead writer of the research and a heart specialist on the College of Copenhagen. “Not rather a lot.”
Dr. Mette Kalager, a researcher at Telemark Hospital in Norway and the Harvard Faculty of Public Well being, was persuaded. The research confirmed that “though there is likely to be a symbolic impact,” she wrote in an e-mail, “the impact of carrying a masks doesn’t considerably scale back danger” for wearers.
Different specialists have been unconvinced. The incidence of infections in Denmark was decrease than it’s as we speak in lots of locations, which means the effectiveness of masks for wearers could have been more durable to detect, they famous.
Members reported their very own take a look at outcomes; masks use was not independently verified, and customers could not have worn them accurately.
“There’s completely little doubt that masks work as supply management,” stopping folks from infecting others, stated Dr. Thomas Frieden, chief govt of Resolve to Save Lives, an advocacy group, and former director of the C.D.C., who wrote an editorial outlining weaknesses of the analysis.