We Need to Talk About That Danish ‘Masks Don’t Work’ Study

Modesto Morganelli
Novembre 20, 2020

The study did not test the role of masks in source control (the transmission from an infected person to others), but instead examined the degree of protection mask wearers can expect when combined with other public health measures.

The evidence within the Damask-19 study excludes a large personal protective effect of mask wearing but can not definitely exclude "no effect".

According to The New York Times, half were given surgical masks and were told to wear them when they were at their homes. For example, study participants who were supposed to wear masks sometimes didn't. The wearing of masks in public was uncommon at this time.

Andrew Selsky of the Associated Press has been researching how to amend CDC advice about masks during the pandemic as more science emerged about how the virus spreads.

And in July, the CDC stressed that cloth face coverings are a critical tool in the fight against COVID-19, particularly when everyone wears them. In an email Dr. Bundgaard sent to The New York Times, she wrote that "although there might be a symbolic effect".

A recent paper examining hospitalization rates in United States counties which imposed mask mandates was withdrawn because it failed to account for the seasonal effect, after initially claiming that infection rates fell over the summer, only for them to shoot back up once it had ended. When an uninfected person wearing a mask is near an infected person who isn't wearing one, the amount of virus the uninfected person inhaled fell by up to 50%.

Additionally, the editorial noted that the effect of mask recommendations depends on various other factors, " including the prevalence of the virus, social distancing behaviors, and the frequency and characteristics of gatherings". The researchers had hoped that masks would cut the infection rate by half among wearers.

"If you walk around any city in the USA, some people are wearing masks over their noses and other ones are wearing them hanging off one ear", she says, and that makes the study more of a practical real-world test.

The difference between the two groups not statistically significant.

Dr. Mette Kalager, a professor of medical decision-making at the University of Oslo, found the research compelling. Therefore, these results can not be used in the context of the fact that masks do not need to be worn at all.

A study done in Denmark, published Wednesday in Annals of Internal Medicine, seemed to question whether and to what extent masks protect the wearer. "A surgical mask is better than most cloth masks".

"An N95 mask is better than a surgical mask,"Frieden said. A cloth mask is better than nothing".

"When we can't stay six feet away from others, please, I'm begging you, wear a face covering", Adams says in the videotaped July 2 tweet. He has also promised to ask every governor to impose mask rules. Health experts have long said a mask provides only limited protection for the person wearing it, but can dramatically reduce the risk to others if the wearer is infected, even when showing no symptoms.

First, is important to note that the study looked exclusively at the protective effects of masks for the wearer, and not at the wearer's ability to protect others.

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