The U.S. Centers for Disease Control and Prevention on Thursday issued guidelines to help schools and workplaces determine whether they are ready to open for business.

The six so-called "decision trees" cover yes or no scenarios that are aimed to help assess readiness for opening workplaces, restaurants and bars, mass transit, childcare, camps and schools.

A previous draft of CDC guidance, which was more detailed and restrictive than the plan the White House put out last month, was not released by the Trump administration.