• Meng-Yao Zhou, Xiao-Li Xie, Yong-Gang Peng, Meng-Jun Wu, Xiao-Zhi Deng, Ying Wu, Li-Jing Xiong, and Li-Hong Shang.
• Department of Pediatric Infection and Gastroenterology, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology, Chengdu, Sichuan, P.R. China.
• Int. J. Infect. Dis. 2020 Jul 1; 96: 710-714.

IntroductionCoronaviruses, both SARS-CoV and SARS-CoV-2, first appeared in China. They have certain biological, epidemiological and pathological similarities. To date, research has shown that their genes exhibit 79% of identical sequences and the receptor-binding domain structure is also very similar. There has been extensive research performed on SARS; however, the understanding of the pathophysiological impact of coronavirus disease 2019 (COVID-19) is still limited.MethodsThis review drew upon the lessons learnt from SARS, in terms of epidemiology, clinical characteristics and pathogenesis, to further understand the features of COVID-19.ResultsBy comparing these two diseases, it found that COVID-19 has quicker and wider transmission, obvious family agglomeration, and higher morbidity and mortality. Newborns, asymptomatic children and normal chest imaging cases emerged in COVID-19 literature. Children starting with gastrointestinal symptoms may progress to severe conditions and newborns whose mothers are infected with COVID-19 could have severe complications. The laboratory test data showed that the percentage of neutrophils and the level of LDH is higher, and the number of CD4+ and CD8+T-cells is decreased in children's COVID-19 cases.ConclusionBased on these early observations, as pediatricians, this review put forward some thoughts on children's COVID-19 and gave some recommendations to contain the disease.Copyright © 2020 The Authors. Published by Elsevier Ltd.. All rights reserved.

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