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?:abstract
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Our study aimed to assess the existing evidence on whether severe coronavirus disease 2019 (COVID-19) is associated with elevated inflammatory markers The PubMed, Embase, Web of Science, Scopus, Chinese National Knowledge Infrastructure, WanFang, and China Science and Technology Journal databases were searched to identify studies published between January 1 and April 21, 2020 that assayed inflammatory markers in COVID-19 patients Three reviewers independently examined the literature, extracted relevant data, and assessed the risk of publication bias before including the meta-analysis studies Fifty-six studies involving 8719 COVID-19 patients were identified Meta-analysis showed that patients with severe disease showed elevated levels of white blood cell count (WMD: 1 15, 95% CI: 0 78-1 52), C-reactive protein (WMD: 38 85, 95% CI: 31 19-46 52), procalcitonin (WMD: 0 08, 95% CI: 0 06-0 11), erythrocyte sedimentation rate (WMD: 10 15, 95% CI: 5 03-15 46), interleukin-6 (WMD: 23 87, 95% CI: 15 95-31 78), and interleukin-10 (WMD: 2 12, 95% CI: 1 97-2 28) Similarly, COVID-19 patients who died during follow-up showed significantly higher levels of white blood cell count (WMD: 4 11, 95% CI: 3 25-4 97), C-reactive protein (WMD: 74 18, 95% CI: 56 63-91 73), procalcitonin (WMD: 0 26, 95% CI: 0 11-0 42), erythrocyte sedimentation rate (WMD: 10 94, 95% CI: 4 79-17 09), and interleukin-6 (WMD: 59 88, 95% CI: 19 46-100 30) than survivors Severe COVID-19 is associated with higher levels of inflammatory markers than a mild disease, so tracking these markers may allow early identification or even prediction of disease progression
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