[allenp]

Although not a direct answer to 'when would you not wear a mask anymore' there are objective criteria guiding some of the decision making around phased re-openings (of which some phase would be "no more masks").

Example Criteria: https://kingcounty.gov/depts/health/covid-19/data/~/media/de...

Example Dashboard: https://kingcounty.gov/depts/health/covid-19/data/key-indica...