Ключевые слова: adult, airborne, asia, asian, breathing, clinic, control, danger, disease, droplets, dust, elder, elderly, face, female, flu, health, hospital, human, influenza, insurance, japanese, mask, masks, medical, medicine, old, patient, people, pm 25, pneumonia, portrait, protect, retirement, safety, senior, sick, sickness, surgery, surgical, vaccine, virus, warning, white, woman,