Exhaled breath SARS-CoV-2 shedding patterns across variants of concern.

Exhaled breath SARS-CoV-2 shedding patterns across variants of concern.
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DOI:
10.1016/j.ijid.2022.07.069
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发表时间:
2022-10
影响因子:
8.4
通讯作者:
Peumans, Peter
Peumans, Peter
中科院分区:
医学2区
文献类型:
--
作者:
Raymenants, Joren;Duthoo, Wout;Stakenborg, Tim;Verbruggen, Bert;Verplanken, Julien;Feys, Jos;Van Duppen, Joost;Hanifa, Rabea;Marchal, Elisabeth;Lambrechts, Andy;Maes, Piet;Andre, Emmanuel;Van den Wijngaert, Nik;Peumans, Peter

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我们进行了呼出气(EB)和鼻咽(NP)定量聚合酶链反应(qPCR)和NP快速抗原检测(NP RAT)的SARS-CoV-2感染的不同变体。我们将免疫初治的α感染患者(n = 11)和部分加强的omicron感染患者(n = 8)作为高风险接触者。我们比较了队列之间的峰值NP和EB qPCR循环时间(ct)值(Wilcoxon-Mann-Whitney检验)。使用Cochran Q检验比较三个感染阶段的检测阳性率。α和Omicron感染的NP ct峰值中位数分别为11.5(四分位距[IQR] 10.1-12.1)和12.2(IQR 11.1-15.3)。α和Omicron感染的峰值中值EB ct分别为25.2(IQR 24.5-26.9)和28.3(IQR 26.4-30.8)。NP(P = 0.19)或EB(P = 0.09)队列之间的分布无差异。EB组SARS-CoV-2脱落在第1天达到峰值(置信区间[CI] 0.0 - 4.5),NP组在第3天达到峰值(CI 1.5 - 6.0)。D 0-D1(P = 0.44)和D2-D 6(P = 1.0)时EB qPCR阳性率与NP qPCR阳性率相等。在D 0-D1(P = 0.003)和D2-D 6(P = 0.008),它取代了NP大鼠阳性。D 7 ~ D10时均低于两者(P < 0.001)。不同变体之间的EB峰值和鼻咽脱落相当。EB qPCR阳性匹配NP qPCR,并在感染的第一周取代NP RAT。
We performed exhaled breath (EB) and nasopharyngeal (NP) quantitative polymerase chain reaction (qPCR) and NP rapid antigen testing (NP RAT) of SARS-CoV-2 infections with different variants. We included immuno-naïve alpha-infected (n = 11) and partly boosted omicron-infected patients (n = 8) as high-risk contacts. We compared peak NP and EB qPCR cycle time (ct) values between cohorts (Wilcoxon-Mann-Whitney test). Test positivity was compared for three infection phases using Cochran Q test. Peak median NP ct was 11.5 (interquartile range [IQR] 10.1-12.1) for alpha and 12.2 (IQR 11.1-15.3) for omicron infections. Peak median EB ct was 25.2 (IQR 24.5-26.9) and 28.3 (IQR 26.4-30.8) for alpha and omicron infections, respectively. Distributions did not differ between cohorts for NP (P = 0.19) or EB (P = 0.09). SARS-CoV-2 shedding peaked on day 1 in EB (confidence interval [CI] 0.0 - 4.5) and day 3 in NP (CI 1.5 - 6.0). EB qPCR positivity equaled NP qPCR positivity on D0-D1 (P = 0.44) and D2-D6 (P = 1.0). It superseded NP RAT positivity on D0-D1 (P = 0.003) and D2-D6 (P = 0.008). It was inferior to both on D7-D10 (P < 0.001). Peak EB and nasopharynx shedding were comparable across variants. EB qPCR positivity matched NP qPCR and superseded NP RAT in the first week of infection.
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发表时间: 2021-09
期刊: Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin
影响因子: --
作者:
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影响因子: 8.9
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发表时间: 2021-11-17
期刊: Microorganisms
影响因子: 4.5
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