5-insert the swab into the other nostril

scoreline analysis analyze collection contagious coronavirus cotton swabs covid19 disease equipment examine flat forefinger four gloves hands hospital infection insert isolated lab laboratory medical middle nasal swab nasopharyngeal flocked nasopharynx nose nostril outline patient pcr prevention push respiratory viral saliva sample septum specimen step shaft test thumb vector virus wrapper ear 5-insert visual reference inserted distance opening patient’s ear rotate times