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Instantaneous Reproductive Number (RtR_t): Hunan Province, China

In Hunan Province, China, it was estimated that the mean instantaneous reproductive number (RtR_t) of COVID-19 was above the epidemic threshold for approximately two weeks (January 13 to January 28, 2020), with a peak value of 1.34 (95% CI: 1.06–1.68) on January 20, 2020.

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Updated 2026-05-18

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SARS-CoV-2 (COVID-19)

Biomedical Sciences