Whitehouse Centers for Disease Control and Prevention US Department of Homeland Security - Federal Emergency Management Agency

Companies do not necessarily need to close after a person with confirmed or suspected COVID-19 has been in a company facility. The area(s) used or visited by the ill person should be closed for 24 hours or as long as possible. Open outside doors and windows as much as possible ensuring that doing so does not pose a safety risk to children using the facility (i.e. make sure that children are not able to enter the closed off area through any windows or doors) and use ventilating fans to increase air circulation in the area. Once the area has been appropriately disinfected, it can be opened for use. Workers without close contact with the person with confirmed or suspected COVID-19 can return to work immediately after disinfection is completed.

Last updated June 27, 2020
Source: Centers for Disease Control and Preventionlinks to external site