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首頁> 美國衛生研究院文獻>Infectious Disease Reports >Viral Load Difference between Symptomatic and Asymptomatic COVID-19 Patients: Systematic Review and Meta-Analysis
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Viral Load Difference between Symptomatic and Asymptomatic COVID-19 Patients: Systematic Review and Meta-Analysis

機譯:癥狀性和無癥狀Covid-19患者的病毒載荷差:系統評價和薈萃分析

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摘要

We conducted a systematic review and meta-analysis to investigate the possible difference in the SARS-CoV-2 viral load between asymptomatic and symptomatic COVID-19 patients. Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed in abstracting data and assessing validity. We searched MEDLINE, Scopus, Web of Science and Google Scholar for all investigations in the English language, reporting data on the threshold cycle (Ct) from real-time RT-PCR assays for the RNA-dependent RNA polymerase (RdRp), envelope (E) and nucleocapsid (N) SARS-CoV-2 genes in asymptomatic and symptomatic COVID-19 patients. Results: Overall, 703 COVID-19 patients (553 symptomatic and 150 asymptomatic) were analyzed. Five investigations reported the mean age of patients, evidencing that asymptomatic patients were younger than symptomatic patients (34.0 vs. 40.3 years, respectively). Pooled data regarding the levels of expression of the RdRp gene revealed no significant difference between symptomatic and asymptomatic subjects. Similarly, no differences were observed comparing the mean Ct values for the E and N genes. Based on real-time RT-PCR data, no differences exist in the viral load between symptomatic and asymptomatic COVID-19 subjects considering Ct values for RdRp, E and N genes’ expression. Asymptomatic subjects may represent a reservoir of the infection and significantly contribute to the maintenance of the pandemic.
機譯:我們進行了系統審查和薈萃分析,以研究無癥狀和癥狀性Covid-19患者之間的SARS-COV-2病毒載量的可能差異。遵循抽象數據和評估有效性的系統評價和Meta-Analys的首選報告項目。我們搜索了Medline,Scopus,科學和谷歌學者的所有調查,從英語語言中進行了所有調查,從RNA依賴性RNA聚合酶(RDRP),包膜( E)和核衣殼(N)無癥狀和癥狀Covid-19患者中的SARS-COV-2基因。結果:總體而言,分析了703名Covid-19患者(553例癥狀和150例無癥狀)。五項調查報告稱患者的平均年齡,證明無癥狀患者比癥狀患者更年輕(分別為34.0節,40.3歲)。關于RDRP基因的表達水平的匯集數據顯示癥狀和無癥狀受試者之間沒有顯著差異。類似地,觀察到比較E和N基因的平均CT值沒有差異。基于實時RT-PCR數據,考慮RDRP,E和N基因表達的CT值,在癥狀和無癥狀Covid-19受試者之間存在病毒載量沒有差異。無癥狀受試者可以代表感染的儲層,并顯著促進了大流行的維持。

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