Table 1 Summary of studies on the reproduction number of the Wuhan variant
Study | Location | Study date | Method | Estimated R0 | Other findings |
|---|---|---|---|---|---|
Ke et al. | United States and eight European countries | March 2020 | SEIR type | Between 3.5 and 6.4, with the highest amounts of 5.9 (CI 4.7–7.5) and 6.4 (5.2–8.0) for the US and Spain, respectively | Growth rate: between 0.19–0.29/day doubling time: between 2.4 and 3.7 days |
Liu et al. | Based on 12 studies located in China | January 2020 to February 2020 | PubMed, bioRxiv and Google Scholar were accessed | R0 was estimated to be between 1.4 and 6.49 (mean = 3.28, median = 2.79, and interquartile range (IQR) = 1.16) | |
Zhao et al. | China | January 2020 | A method based on the statistical exponential model, adopting SI from SARS and MERS | Between 2.24 (95% CI 1.96–2.55) to 5.71 (95% CI 4.24–7.54) | |
Islam et al. | Bangladesh | March 2021 to July 2021 | Four different methods based on the reported confirmed cases by the government. Including SB, TD, ML, and EG | EG model: 1.173 (95% CI 1.172–1.174) ML model: 1.09 (95% CI 1.08–1.10) SB model: 1.24 (95% CI 1.18–1.29) TD model: 1.07 (95% CI 1.02–1.13) | CFR: 1.32% overall recovery rate: 56.85% |