• Xiang Wang, Shoujun Wang, Liangge Sun, and Guijun Qin.
• Department of Endocrinology and Metabolism, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China. Electronic address: wangxiang801028@163.com.
• Diabetes Res. Clin. Pract. 2020 Jun 1; 164: 108200.

BackgroundSince December 2019, a new strain ofcoronavirus named 2019 novel coronavirus (2019-nCoV) has been discovered in Wuhan. The prevalence of diabetes mellitus, which is a great public health issue leading to immunity inhibition and anincreased incidenceofinfections, has been increasing over the past ten years. The aim of this research was to systematically assess the prevalence of diabetes mellitus among 2019-nCoV.MethodsWe searched PubMed, Embase, Web of Science and Medline for observational studies up to February 25, 2020. A random effects model or fixed-effects model was applied to evaluate the pooled prevalence of diabetes mellitus and odds ratio (OR) with 95% confidence interval (CI).FindingsIn total, nine papers met the eligibility criteria. The pooled prevalence of DM was 9% (95% CI 6%-12%). There was obvious heterogeneity (I2 65%, p = 0.004) in the prevalence of DM in these studies. The prevalence of DM in moderate patients with 2019-nCoV was 7% (95% CI 4%-10%). The prevalence of DM in severe patients with 2019-nCoV was 17% (95% CI 13%-21%). The prevalence of DM in severe patients with 2019-nCoV was significantly higher than that in moderate patients with 2019-nCoV (OR 2.49, 95% CI 1.70 to 3.64).InterpretationTo our knowledge, this work is the first report showing the prevalence of diabetes mellitus in patients with 2019-nCoV, which is beneficial to prevent the spread of 2019-nCoV in the future.Copyright © 2020 Elsevier B.V. All rights reserved.

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