The reproductive/reproduction number of COVID-19 is estimated to be between 2 and 2.5 as of March 6, 2020. 

Reproductive Number of COVID-19

Epidemiological studies on COVID-19 in Asia By Country

- Topic (Reproductive Number)
- Geographical Location (China)
- Date (January 22nd)

University of Michigan - Ann Arbor

Method: Statistical exponential growth model

Approaches: Mean incubation period = 5.2 days, mean serial interval = 7.5 days 

Estimated R$_0$: 2.2 (95% CI 1.4 - 3.9)

Reproductive Number of COVID-19 Infected Pneumonia in China (January 22 2020: Qun Li et al.)

**Method:** Mathematical SEIR-type epidemiological model incorporating appropriate compartments corresponding to interventions. **Approaches:** Method-based method and likelihood-based method. **Estimated $$R_0$$:** 6.47 (95% CI: 5.71 - 7.23).

Reproductive Number of COVID-19 in China (January 22 2020: Tang et al.)

Liu, Ying, et al. “The Reproductive Number of COVID-19 Is Higher Compared to SARS Coronavirus.” Journal of Travel Medicine, vol. 27, no. 2, 2020, doi:10.1093/jtm/taaa021. https://doi.org/10.1093/jtm/taaa021

The reproductive number of COVID-19 is higher compared to SARS coronavirus

Qun L et al.  2020. Early transmission dynamics in wuhan, china, of novel coronavirus-infected pneumonia. New England Journal of Medicine. 10.1056/NEJMoa2001316.

Early Transmission Dynamics in Wuhan, China, of Novel Coronavirus–Infected Pneumonia

Tang B, Wang X, Li Q et al.  Estimation of the transmission risk of 2019-nCov and its implication for public health interventions (January 24, 2020). https://ssrn.com/abstract=3525558 or https://doi.org/10.2139/ssrn.3525558 (9 February 2020, date last accessed).

Estimation of the Transmission Risk of the 2019-nCoV and Its Implication for Public Health Interventions

- Definition of the statistic being estimated
- Methods for analysis 
- Data-collection





Differences between Reproductive Number of COVID-19 Infected Pneumonia in China (January 22 2020) and Reproductive Number of COVID-19 in China (January 22 2020)

Similarities between Reproductive Number of COVID-19 Infected Pneumonia in China (January 22 2020) and Reproductive Number of COVID-19 in China (January 22 2020)

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