Coronavirus (COVID-19) Vaccine. All DC residents 6 months and older are eligible to receive the COVID-19 vaccine. Let's all be vaxxed together, DC! For vaccine opportunities, visit vaccinate.dc.gov or call the COVID-19 Call Center at 1-855-363-0333. For deaf/hard-of-hearing individuals, dial 711 for TTY service. For additional assistance or questions, call the ADH COVID-19 Call Center at 1-800-803-7847, or email [email protected] Diseases & Conditions. COVID-19 COVID-19 Health Guidance ; COVID-19 and Pregnancy ; COVID-19 Information for Healthcare Providers.