Estimation of the incubation period of COVID-19 using viral load data.

Estimation of the incubation period of COVID-19 using viral load data.
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DOI:
10.1016/j.epidem.2021.100454
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发表时间:
2021-06
期刊:
影响因子:
3.8
通讯作者:
Iwami S
Iwami S
中科院分区:
医学2区
文献类型:
--
作者:
Ejima K;Kim KS;Ludema C;Bento AI;Iwanami S;Fujita Y;Ohashi H;Koizumi Y;Watashi K;Aihara K;Nishiura H;Iwami S

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COVID-19的潜伏期或从感染到出现症状的时间通常是通过与病例及其接触者面谈收集的数据来估计的。然而,这种估计受到病例对暴露时间回忆的不确定性的影响。我们提出了一种新的方法,使用自住院以来收集的病毒载量数据,用病毒动力学的数学模型来预测感染的时间。作为一个例子,我们使用了来自多个国家(新加坡、中国、德国和韩国)的30名住院患者的病毒载量报告数据,并估计了潜伏期。潜伏期的中位数、2.5和97.5百分位数分别为5.85天(95% CI: 5.05, 6.77)、2.65天(2.04,3.41)和12.99天(9.98,16.79),与以往研究估计的值相当。使用病毒载量来估计潜伏期可能是一种有用的方法,特别是当直接观察感染事件不切实际时。
The incubation period, or the time from infection to symptom onset, of COVID-19 has usually been estimated by using data collected through interviews with cases and their contacts. However, this estimation is influenced by uncertainty in the cases’ recall of exposure time. We propose a novel method that uses viral load data collected over time since hospitalization, hindcasting the timing of infection with a mathematical model for viral dynamics. As an example, we used reported data on viral load for 30 hospitalized patients from multiple countries (Singapore, China, Germany, and Korea) and estimated the incubation period. The median, 2.5, and 97.5 percentiles of the incubation period were 5.85 days (95 % CI: 5.05, 6.77), 2.65 days (2.04, 3.41), and 12.99 days (9.98, 16.79), respectively, which are comparable to the values estimated in previous studies. Using viral load to estimate the incubation period might be a useful approach, especially when it is impractical to directly observe the infection event.
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