Table 4.
Presentation of parameters: basic reproduction number (R0).
| Author, year [references] | Country | Date of study | Method: | R0a | Others |
|---|---|---|---|---|---|
| Chen et al., 2020 (16) | China | Between December 2019 and January 2020 | Reservoir-people transmission network modelc | 3,58. | – |
| Chen et al., 2020 (16) | Japan (Diamond Princess cruise ship) | February 2020 | Package “earlyR” | 2.28 (95%CI: 2.06–2.52) | – |
| Kuniya, 2020 (17) | Japan | Between January and February 2020 | SEIR Modeld | 2.6 (95%CI: 2.4–2.8) | – |
| Fang et al., 2020 (18) | China | Between January and February 2020 | SEIR Modeld | – | R according to date: Day 0: 2.4; day 10: 3.2; day 20: 2.98, etc. |
| Zhao et al., 2020 (19) | China | January 2020 | Statistical exponential growth modele | 2.24 (95%CI: 1.96—2.55) | – |
| Kucharski et al., 2020 (20) | China | Between January and February 2020 | Stochastic transmission model | – | Rtb(before and after restriction measures): 2.35 (95%CI: 1.15–4.77) to 1.05 (95%CI: 0.41–2.39) |
| Wang et al., 2020 (21) | China | Between December 2019 and February 2020 | SEIR Modeld | 3.1 | Rtb measured in distinct phases after restriction measures: 2.6; 1.9 and 0.5 |
| Rocklöv et al., 2020 (22) | Japan (Diamond Princess cruise ship) | January 2020 | SEIR Modeld | 14.8 | Rtb after restriction measures: 1.74 |
| Mizumoto and Chowell, 2020 (23) | Japan (Diamond Princess cruise ship) | Between January and February 2020 | Next generation matrix (NGM)f in a totally susceptible population | Maximum Rtb: 11.2 (95%CI: 7.5—16.2) and median Rt: 5.8 (95%CI: 0.6–11.0) | |
| Tang et al., 2020 (24) | China | January 2020 | SEIR Modeld | 6.47 (95%CI: 5.71—7.23) | – |
| Wu et al., 2020 (25) | China | Between December 2019 and January 2020 | SEIR Modeld | 2.68 (95%CI: 2.47–2.86) | – |
| Li et al., 2020 (26) | China | January 2020 | Statistical exponential growth modele | 2.2 (95%CI: 1.4–3.9). | – |
| Zhao et al., 2020 (27) | China | January 2020 | Exponential growth model by Poisson in a completely susceptible population | 2.56 (95%CI: 2.49–2.63) | – |
| Wang et al., 2020 (28) | China | Between January and February 2020 | Statistical exponential growth modele | 3.49 (95%CI: 3.42–3.58) | After containment measures Rtb: 2.95 (95%CI: 2.86–3.03) |
| Zhou et al., 2020 (29) | China | January 2020 | SEIR Modeld | 2.8–3.3 | – |
| Ki and Task Force for 2019-nCoV, 2020 (30) | South Korea | Between January and February 2020 | Not informed | 0.48 (95%CI: 0.25–0.84) | – |
| Du et al., 2020 (31) | China | Between January and February 2020 | Exponential growth model based on public data from Wuhan | 1.32 (95%CI: 1.16–1.48) | – |
| Anastassopoulou et al., 2020 (32) | China | Between January and February 2020 | SIDR modelg | 2–2.6 | Other R0a estimates based on linear regression varied between 3.2 (95%CI: 2.4–4) and 5.14 (95%CI: 4.25–6.03). |
| Song et al., 2020 (33)* | China | January 2020 | Weibull distribution methods, Gamma Lognormal, |
Weibull distribution methods: 3.74 (95%CI: 3.63–3.87); Gamma: 3.16 (95%CI: 2.90–3.43); Lognormal: 3.91 (95%CI: 3.71–4.11) |
– |
| Pan et al., 2020 (34) | China | Between December 2019 and March 2020 | Used a method proposed by Cori et al. (2013)h in R version 3.6.2. | – | Maximum Rtb — 03/01/2020: 3.94 (95%CI: 3.32—-4.63); Minimum Rtb: 08/03/2020: 0.10 (95%CI: 0.08—-0.13) |
a
R0, basic reproduction number.
b
Rt, effective basic reproduction number (variable in time).
c
Reservoir–People transmission network.
d
SEIR: Susceptible – Exposed – Infected – Recovered.
e
Statistical exponential growth model.
f
NGM: next–generation matrix.
g
SIDR: Susceptible – Infected – Recovered – Death.
h
Cori A et al. (2013). doi: 10.1093/aje/kwt133.
*
Article in Chinese, only the abstract in English was assessed.