PMC:7102659 / 10694-11761 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7102659","sourcedb":"PMC","sourceid":"7102659","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7102659","text":"The official data report was not available before January 15, 2020. We fill the missing data before that from several retrospective studies. Among them data in R. Li et al. (2020) are daily symptom onset records, while those in Liu et al. (2020) are daily confirmations. We notice that there is a delay of 14 days between symptom onset and laboratory confirmation of COVID-19 between the two datasets which are largely the same group of patients, see Figure 3 . Namely, if we put back data in R. Li et al. (2020) by 14 days, it largely matches data in Liu et al. (2020). Thus, we assume a proportion of daily cases (reporting rate) will be reported after 14 days since their infectiousness onset (which is generally no later than their symptom onset).\nFigure 3 Comparison between different sources of reported cases: official released data (NHCPRC, 2020) in red, data from Li et al. (denoted as NEJM) (Li et al., 2020) in green, from Liu et al. (denoted as GDCDC) (Liu et al., 2020) in blue, and from P. Wu et al. (denoted as Eurosurv) (P. Wu et al., 2020) in 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