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. 2020 Nov 19;11:559716. doi: 10.3389/fimmu.2020.559716

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Copyright © 2020 Li, Xie, Cui, Tang, Yuan, Huang, Hu, Wang, Zhou and Shi

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Analysis of serum IL-6 and peripheral blood leukocyte characteristics in different age groups. Three hundred sixty-four patients diagnosed with COVID-19, who were admitted to Wuhan Pulmonary Hospital from February 3, 2020 to March 16, 2020, were divided into different age groups (Age ≤ 20, n = 3; 20 < Age ≤ 40, n = 51; 40 < Age ≤ 60, n = 115; 60 < Age ≤ 80, n = 170; Age > 80, n = 25). Information of serum IL-6 (a), leukocyte count (B), lymphocyte count (C), neutrophil count (D) and monocyte count (E) of patients in each group was analyzed. Statistical analysis was performed using unpaired, two-sided Mann-Whitney U-test and data were expressed as mean ± SEM, *p < 0.05.