CDC article says
“Updated July 26, 2020....
Please check the CDC website periodically for updates.”
Any updates, as of August 2021?
NOTE the last sentence here:
“To minimize external contact, each green zone should include able-bodied high-risk individuals capable of caring for residents who have disabilities or are less mobile. Otherwise, designate low-risk individuals for these tasks, preferably who have recovered from confirmed COVID-19 and are assumed to be immune”