Little Evidence Supports Use of Cloth Masks to Limit Spread of Coronavirus: Analysis

Cloth masks are of little use against COVID-19, according to a recently published analysis.

While federal health authorities and a slew of jurisdictions require or recommend wearing masks as a way to limit the spread of the virus that causes COVID-19, a trio of researchers pored over the studies often cited by the officials and found they were poorly designed and offered scant evidence in support of mask usage.

Many of the studies are observational, opening them up to confounding variables, the researchers said in their analysis (pdf), which was published on Nov. 8 by the Cato Institute.

Of 16 randomized controlled trials comparing mask effectiveness to controls with no masks, 14 failed to find a statistically significant benefit, the researchers said. And of 16 quantitative meta-analyses, half showed weak evidence of mask effectiveness, while the others โ€œwere equivocal or critical as to whether evidence supports a public recommendation of masks,โ€ they said.

โ€œThe biggest takeaway is that more than 100 years of attempts to prove that masks are beneficial has produced a large volume of mostly low-quality evidence that has generally failed to demonstrate their value in most settings,โ€ Dr. Jonathan Darrow, an assistant professor of medicine at Harvard Medical School and one of the researchers, told The Epoch Times in an email.

โ€œOfficials mulling mask recommendations should turn their attention to interventions with larger and more certain benefits, such as vaccines. Based on the evidence currently available, masks are mostly a distraction from the important work of promoting public health.โ€

One study (pdf) thatโ€™s widely cited by mask proponents, of rural villages in Bangladesh, found that surgical masks appeared to be marginally effective in reducing symptomatic COVID-19 but that cloth masks werenโ€™t, Darrow and his colleagues noted. The other real-world randomized controlled trial examining mask effectiveness, conducted in Denmark, didnโ€™t find a statistically significant difference in infections between the masked and unmasked groups.

โ€œThe remainder of the available clinical evidence is primarily limited to non-randomized observational data, which are subject to confounding,โ€ the researchers said, including accounting for other differences in behavior among those who donโ€™t wear masks.

They did note evidence that masks reduce droplet dispersion, although cloth masks are unlikely to capture the particles even if worn properly.

Byย Zachary Stieber

Read Full Article on TheEpochTimes.com

The Epoch Times
The Epoch Timeshttps://www.theepochtimes.com/
Tired of biased news? The Epoch Times is truthful, factual news that other media outlets don't report. No spin. No agenda. Just honest journalism like it used to be.

Columns

Viewers like you

There is no constitutional authority for any spending on public broadcasting โ€“ period. Any questions: See Article 1, Section 8 of the U.S. Constitution.

Beyond the Trump-Musk fallout?

We are witnessing an unprecedented, unhinged Democrat effort to use lawfare, big Democrat donors, street theater, congressional disruptions, potty-mouth videos, the administrative state, the legacy media, and discredited pollsters to stop the Trump agenda.

Trans-wormal

No worm ever said "I am anthropomorphizing, I am a butterfly" to a toad or flock of geese and expected acknowledgement and support.

In Greenlandโ€™s Icy Capital, Past Troubles Haunt Hopes for the Future

As geopolitical realities and ongoing economic growth raise the stakes, U.S. interest in Greenland and the dream of independence may change things in a big way.

How a Chinese Government Statistician Was Forced to Report Fake Data

Chinese local govt employee produced a non-authorized report on bees and was visited by police and threatened with being sent to a mental hospital.

News

Supreme Court Sides With DOGE in Social Security, Records Cases

The Supreme Court handed DOGE two big wins late on June 6 in its effort to reduce the size of the federal government.

Kilmar Abrego Garcia Returns to US to Face Criminal Charges

Kilmar Abrego Garcia, a citizen of El Salvador, is on his way back to the US, where he will face criminal charges for allegedly smuggling illegal immigrants.

White House Adviser Gives Update on DOGEโ€™s Future Amid Muskโ€“Trump Spat

A top White House adviser said DOGEโ€™s work will likely continue amid a spat between its former chief, Elon Musk, and President Donald Trump.

Trump Administration Asks Supreme Court to Allow Dismantling of Education Department

Trump admin asked Supreme Court to allow it to resume dismantling U.S. Dept of Education, following a lower courtโ€™s previous order halting process.

FTC Warns of Rising Student Loan Scams, Says Fraudsters Took Millions From Borrowers

FTC is warning borrowers to steer clear of student loan debt-relief scams, after shutting down group of companies that allegedly charged millions in illegal fees and left customers worse off.

Walmartโ€™s Drone Delivery Coming to 5 More US Cities

Walmart is set to launch its drone delivery service in five more U.S. cities: Atlanta, Charlotte, Houston, Orlando, and Tampa, the company.

Court Orders Trump Administration to Restore AmeriCorps Funding to States

Federal court ordered Trump admin to restore AmeriCorps funding to states. The ruling comes as part of a lawsuit filed by 24 states and DC.

Tax Deductions You Can Take Without Itemizing

Itโ€™s not always beneficial to itemize. With IRSโ€™s current standard deduction for 2025 most Americans who canโ€™t itemize go with standard deduction.
spot_img

Related Articles