Face masks during the COVID-19 pandemic in the United States

The wearing of non-medical face masks in public to lessen the transmission of COVID-19 in the United States was first recommended by the CDC on April 3, 2020, as supplemental to hygiene and appropriate social distancing. Throughout the pandemic, various states, counties, and municipalities have issued health orders requiring the wearing of non-medical face coverings — such as cloth masks — in spaces and businesses accessible to the public, especially when physical distancing is not possible.

Source: Wikipedia — Face masks during the COVID-19 pandemic in the United States (CC BY-SA 4.0)