Ключевые слова: adult, at risk, background, bacteria, blank, blank space, bone, copy space, countdown, dead, death, death rate, design space, donning, edit space, epidemic, flu, free space, glass timer, globally, head, health, high risk, human, international, internationally, life, life risk, mask, mask wearing, medical, out of time, pandemic, protect, protection, risk, running out of time, skeleton, skull, space, surgical mask, text space, time limit, time limited, timer, virus, wearing,