On the Diamond Princess cruise ship, an initial estimated $$R_0$$ of 14.8 (approximately 4 times higher than the $$R_0$$ in the epicenter of the outbreak in Wuhan, China) was reduced to an estimated reproductive number of 1.78 after on-board isolation and quarantine measures were implemented.

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- Estimation of the reproductive number of novel coronavirus (COVID-19) and the probable outbreak size on the Diamond Princess cruise ship: A data-driven analysis

- Effects of Countermeasures on the Reproductive Number for the Diamond Princess Cruise Ship

Reproductive number studies for Diamond Princess Cruise ship

Frieden, Thomas R., and Christopher T. Lee. “Identifying and Interrupting Superspreading Events—Implications for Control of Severe Acute Respiratory Syndrome Coronavirus 2.” Emerging Infectious Diseases, vol. 26, June 2020. https://doi.org/10.3201/eid2606.200495

Identifying and Interrupting Superspreading Events—Implications for Control of Severe Acute Respiratory Syndrome Coronavirus 2

Study of 355 confirmed COVID-19 cases as of February 16, 2020 with reproductive number of 2.28 (95% CI: 2.06, 2.52). This estimate was calculated during the "early phase" of the Diamond Princess outbreak.

Estimation of the reproductive number of novel coronavirus (COVID-19) and the probable outbreak size on the Diamond Princess cruise ship: A data-driven analysis

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