NEW CDC REPORT: Mask mandates lower COVID cases by around 1.5% over a two month period pic.twitter.com/wcoKXlJkDN

— Breaking911 (@Breaking911) March 6, 2021

The CDC recommends wearing masks after their study showed that related to COVID, the results of wearing masks were statistically the same as the results when not wearing masks. The results of a CDC study at first appear to show that wearing masks help reduce the spread of COVID:

Here's a link to the CDC Report Summary page.

Here's a screenshot of the section with the above quote in it:

I include the screenshot because I believe they will either erase it, or try to change it.