How to build a novel burst disease diagnostics for hunting potential infection source: the enlightenment from screening patients via combining viral and antibody testing at the COVID-19 pandemic early stage

crossref(2022)

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摘要
Abstract Purpose: We aimed to summarize the diagnostic strategies used to identify potential patients with COVID-19 among inbound overseas travelers in Xiamen, China.Methods: From October 2020 to December 2020, 180,000 inbound overseas travelers were subjected to government quarantine in Xiamen, China. We evaluated the screening efficiency of combining viral and antibody testing strategies to identify potential patients with COVID-19. Results: The COVID-19 positive rate was 0.17% (306/180,000). There was no difference between the combined PCR and antibody and the PCR testing strategy for screening COVID-19(2.0 [IQR,2.0–3.0] vs. 2.0[IQR,2.0–2.0]; P= 0.175). The results for the combined screening strategy were available 4 days earlier than those for the PCR testing strategy (3.0 [IQR, 3.0–3.0] vs. 7.0[IQR, 7.0–14.0], P=0.000). Compared with the non-key screening population, the key screening population showed less PCR rounds (2.0 [IQR, 2.0–2.0] vs. 2.0[IQR, 2.0–3.0]; (P=0.008) and time (3.0[IQR, 3.0–3.0] vs. 7.0[IQR, 7.0–14.0]; P=0.000) for screening COVID-19. Conclusion: Combining viral and antibody testing strategies is effective; it allows timely identification of the source of COVID-19 infection. Moreover, this strategy can be used for close contacts or sub-close contacts of patients with COVID-19 to reduce the risk of SARS-CoV-2 transmission.
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