female caucasian nhs front line medic holding swab collection stick

pcr swab test coronavirus covid doctor female nurse staff woman face mask analysis background care clinic contamination corona coveralls diagnostic disease epidemic equipment eyewear frontline gloves goggles health holding hospital kit lab laboratory medical medicine nasal nasopharyngeal pandemic patient portrait professional protective specimen suit throat uniform virus white caucasian nhs front line medic collection stick oral swabbing rt-pcr testing procedure appointment strain variant global covid-19 crisis stick swabbing patient appointment variant global