a positive result of sars-cov-2 rapid antigen ag test, positive covid-19 corona virus rapid antigen test

positive result sars-cov-2 rapid antigen test covid-19 corona virus white tablets medications treatment isolated background novel coronavirus pandemic 2019-ncov antigens cassette contagion contagious control crisis global diagnosis diagnostic epidemic hospital illustrative kit laboratory medical alert medicine patient tested pcr quarantine quick sample sars cov outbreak sars-cov-2-rapid-ag swab swabs covid viral spread nasopharyngeal nasal