Ключевые слова: 19, adult, africanamerican, care, caucasian, clinic, corona, coronavirus, covid, covid 19, covid19, disease, doctor, face mask, females, flu, front view, group, health, healthcare, hospital, illness, immunization, indoors, infectious, inside, looking at camera, males, man, medical, medicine, multiethnic group, pandemic, patient, people, portrait, prevention, protection, research, standing, treatment, vaccination, vaccine, virus, waistup, woman, worker,