Skip to main content
This Board Has Moved

This board has been migrated to our new platform! Check out the new home page at or click below to go directly to the new Board on the new site.

Go to the New Site
Message Font: Serif | Sans-Serif
No. of Recommendations: 64
* CDC just said that masks are basically ineffective.

Actually, what the CDC said was


What is already known about the topic?

Community and close contact exposures contribute to the spread of COVID-19.

What is added by this report?

Findings from a case-control investigation of symptomatic outpatients from 11 U.S. health care facilities found that close contact with persons with known COVID-19 or going to locations that offer on-site eating and drinking options were associated with COVID-19 positivity. Adults with positive SARS-CoV-2 test results were approximately twice as likely to have reported dining at a restaurant than were those with negative SARS-CoV-2 test results.

What are the implications for public health practice?

Eating and drinking on-site at locations that offer such options might be important risk factors associated with SARS-CoV-2 infection. Efforts to reduce possible exposures where mask use and social distancing are difficult to maintain, such as when eating and drinking, should be considered to protect customers, employees, and communities.

That does not say that mask wearing is ineffective - it says that when you're not wearing the mask because you're eating or drinking that there is an issue. A line in the report showing that the percent of the case group that 'always' wore a mask when out was nearly as high as the percent of the control group was interpreted by those who don't want to wear masks to show that mask wearing is ineffective. But 'always' is obviously subjective, since the case group was nearly twice as likely to have dined out. Obviously, you can't wear a mask when you're 'dining out' because you can't eat when wearing a mask. And yet, 71% of the positive group said they 'always' wore a mask during the prior 2 weeks, even though 41% said that they had dined out, and 8.5% said they had gone to a coffee shop or bar. So for at least some of those people, 'always' meant "always, except when I'm eating/drinking". Additionally, those with infections also tended to say that the other people in the venue were less likely to be wearing a mask. So I would say that the CDC actually says that masks can be effective, but behaviors can override the effectiveness.

Print the post  


The Retirement Investing Board
This is the board for all discussions related to Investing for and during retirement. To keep the board relevant and Foolish to everyone, please avoid making any posts pertaining to political partisanship. Fool on and Retire on!
When Life Gives You Lemons
We all have had hardships and made poor decisions. The important thing is how we respond and grow. Read the story of a Fool who started from nothing, and looks to gain everything.
Contact Us
Contact Customer Service and other Fool departments here.
What was Your Dumbest Investment?
Share it with us -- and learn from others' stories of flubs.
Work for Fools?
Winner of the Washingtonian great places to work, and Glassdoor #1 Company to Work For 2015! Have access to all of TMF's online and email products for FREE, and be paid for your contributions to TMF! Click the link and start your Fool career.