1. residents of residential care facilities 2. pregnant or lactating women 3. inadequate venous access for repeated phlebotomy 4. history of confirmed or suspected sars-cov-2 infection

1. residents of residential care facilities 2. pregnant or lactating women 3. inadequate venous access for repeated phlebotomy 4. history of confirmed or suspected sars-cov-2 infection

residents of residential care facilities pregnant or lactating women inadequate venous access for repeated phlebotomy history of confirmed or suspected sars-cov-2 infection

residents of residential care facilities pregnant or lactating women inadequate venous access for repeated phlebotomy history of confirmed or suspected sars-cov-2 infection