| Ex. DC-074 | COVID Situational Update Presentation, July 29, 2021COVID-19 Situational Update (indoor mask resumption; school-year 2021-22 rules) | Mayor Muriel Bowser (Executive Office of the Mayor) | District of ColumbiaState | July 29, 2021 | 2021 Q3 | Face-covering requirementSchools and child careVaccination or testing | Primary source read | |
| Ex. SEC-04-059 | Mayor's Order 2021-099COVID-19 Vaccination Certification Requirement for District Government Employees, Contractors, Interns, and Grantees | Mayor Muriel Bowser | District of ColumbiaCity | Aug. 10, 2021 | 2021 Q3 | Workplace rulesVaccination or testing | Primary source read | |
| Ex. DC-076 | COVID-19 Situational Update Presentation, September 20, 2021COVID-19 Situational Update (vaccination requirements for school and child care personnel and student athletes; District employee deadline… | Mayor Muriel Bowser (Executive Office of the Mayor) | District of ColumbiaState | Sept. 20, 2021 | 2021 Q3 | Schools and child careWorkplace rulesVaccination or testingQuarantine and isolation | Primary source read | |
| Ex. DC-075 | COVID Situational Update Presentation, August 16, 2021COVID-19 Situational Update (vaccination requirements for District health professionals) | Mayor Muriel Bowser and DC Health | District of ColumbiaSector regulator | Aug. 16, 2021 | 2021 Q3 | Health care ordersWorkplace rulesVaccination or testing | Primary source read | |
| Ex. DC-022 | Mayor's Order 2021-119Extension of Public Emergency | Mayor Muriel Bowser | District of ColumbiaState | Oct. 7, 2021 | | Emergency declarationVaccination or testing | Primary source read | |
| Ex. AGY-FED-LANDS-SCIENCE-COURTS-008 | Administrative Order No. 2021-02Washington, D.C. Courthouse Access | Chief Judge Maurice B. Foley | United States Tax Court (Washington, D.C. courthouse)Court | Oct. 5, 2021 | | Capacity limitCourts and public officesVaccination or testing | Primary source read | |
| Ex. DC-058 | Mayor's Order 2021-148Vaccination Requirement for Entrance into Certain Indoor Establishments and Facilities | Mayor Muriel Bowser | District of ColumbiaState | Dec. 22, 2021 | | Vaccination or testingOther | Primary source read | |
| Ex. ECO-B-107 | Ballotpedia, 'School responses to the coronavirus (COVID-19) pandemic during the 2021-2022 academic year'State-by-State table of 2021-22 school mask requirements and bans (instrument type and end date) and teacher/staff vaccination requirements… | Ballotpedia (secondary source) | United States (50 States and D.C.)Other | Aug. 1, 2022 | 2021 Q3 | Face-covering requirementSchools and child careVaccination or testing | Confirmed from a secondary source | |