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

Initial Cluster of Novel Coronavirus (2019-nCoV) Infections in Wuhan, China Is Consistent with Substantial Human-to-Human Transmission

1
Graduate School of Medicine, Hokkaido University, Kita 15 Jo Nishi 7 Chome, Kita-ku, Sapporo-shi, Hokkaido 060-8638, Japan
2
Core Research for Evolutionary Science and Technology, Japan Science and Technology Agency, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan
*
Author to whom correspondence should be addressed.
J. Clin. Med. 2020, 9(2), 488; https://doi.org/10.3390/jcm9020488
Received: 10 February 2020 / Accepted: 10 February 2020 / Published: 11 February 2020
Reanalysis of the epidemic curve from the initial cluster of cases with novel coronavirus (2019-nCoV) in December 2019 indicates substantial human-to-human transmission. It is possible that the common exposure history at a seafood market in Wuhan originated from the human-to-human transmission events within the market, and the early, strong emphasis that market exposure indicated animal-to-human transmission was potentially the result of observer bias. To support the hypothesis of zoonotic origin of 2019-nCoV stemming from the Huanan seafood market, the index case should have had exposure history related to the market and the virus should have been identified from animals sold at the market. As these requirements remain unmet, zoonotic spillover at the market must not be overemphasized. View Full-Text
Keywords: epidemiology; transmissibility; zoonosis; cluster; exposure; statistical inference epidemiology; transmissibility; zoonosis; cluster; exposure; statistical inference
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Nishiura, H.; Linton, N.M.; Akhmetzhanov, A.R. Initial Cluster of Novel Coronavirus (2019-nCoV) Infections in Wuhan, China Is Consistent with Substantial Human-to-Human Transmission. J. Clin. Med. 2020, 9, 488.

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