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The elderly form the main risk group in the coronavirus disease 2019 (COVID-19) pandemic, and age is recognized as a major risk factor for the severity of infection and mortality of COVID-19. The severity of the infection in children is milder than in adults. Although the pathophysiology of COVID-19 is not fully understood, several possible factors and mechanisms have been suggested for the lower severity of infection in children.
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Falahi et al. (2021) studied this question.
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