man wearing black t-shirt wear a mask holding rapid antigen test kit atk with negative result during swab covid-19 testing,

antigen atk care clinic closeup copy coronavirus cov2 covid19 diagnostic disease doctor hand health healthcare home hospital human illness immunity incubation infect kit laboratory medical medicine negative new normal omicron pandemic person preliminary protect protection quarantine quick rapid result results sample sars science self selfcheck sick space swab technology test testing virus