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Estimating the asymptomatic proportion of coronavirus disease 2019 (COVID-19) cases on board the Diamond Princess cruise ship, Yokohama, Japan, 2020.
Euro Surveill. 2020 03; 25(10)ES

Abstract

On 5 February 2020, in Yokohama, Japan, a cruise ship hosting 3,711 people underwent a 2-week quarantine after a former passenger was found with COVID-19 post-disembarking. As at 20 February, 634 persons on board tested positive for the causative virus. We conducted statistical modelling to derive the delay-adjusted asymptomatic proportion of infections, along with the infections' timeline. The estimated asymptomatic proportion was 17.9% (95% credible interval (CrI): 15.5-20.2%). Most infections occurred before the quarantine start.

Authors+Show Affiliations

Department of Population Health Sciences, School of Public Health, Georgia State University, Atlanta, Georgia, United States. Hakubi Center for Advanced Research, Kyoto University, Yoshidahonmachi, Sakyo-ku, Kyoto, Japan. Graduate School of Advanced Integrated Studies in Human Survivability, Kyoto University Yoshida-Nakaadachi-cho, Sakyo-ku, Kyoto, Japan.Seto Marine Biological Laboratory, Field Science, Education and Reseach Center, Kyoto University, Shirahama-cho, Nishimuro-gun, Wakayama, Japan. Hakubi Center for Advanced Research, Kyoto University, Yoshidahonmachi, Sakyo-ku, Kyoto, Japan.Department of Zoology, University of Oxford, Oxford, United Kingdom.Department of Population Health Sciences, School of Public Health, Georgia State University, Atlanta, Georgia, United States.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32183930

Citation

Mizumoto, Kenji, et al. "Estimating the Asymptomatic Proportion of Coronavirus Disease 2019 (COVID-19) Cases On Board the Diamond Princess Cruise Ship, Yokohama, Japan, 2020." Euro Surveillance : Bulletin Europeen Sur Les Maladies Transmissibles = European Communicable Disease Bulletin, vol. 25, no. 10, 2020.
Mizumoto K, Kagaya K, Zarebski A, et al. Estimating the asymptomatic proportion of coronavirus disease 2019 (COVID-19) cases on board the Diamond Princess cruise ship, Yokohama, Japan, 2020. Euro Surveill. 2020;25(10).
Mizumoto, K., Kagaya, K., Zarebski, A., & Chowell, G. (2020). Estimating the asymptomatic proportion of coronavirus disease 2019 (COVID-19) cases on board the Diamond Princess cruise ship, Yokohama, Japan, 2020. Euro Surveillance : Bulletin Europeen Sur Les Maladies Transmissibles = European Communicable Disease Bulletin, 25(10). https://doi.org/10.2807/1560-7917.ES.2020.25.10.2000180
Mizumoto K, et al. Estimating the Asymptomatic Proportion of Coronavirus Disease 2019 (COVID-19) Cases On Board the Diamond Princess Cruise Ship, Yokohama, Japan, 2020. Euro Surveill. 2020;25(10) PubMed PMID: 32183930.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Estimating the asymptomatic proportion of coronavirus disease 2019 (COVID-19) cases on board the Diamond Princess cruise ship, Yokohama, Japan, 2020. AU - Mizumoto,Kenji, AU - Kagaya,Katsushi, AU - Zarebski,Alexander, AU - Chowell,Gerardo, PY - 2020/3/19/entrez PY - 2020/3/19/pubmed PY - 2020/3/24/medline KW - COVID-19 KW - Japan KW - asymptomatic KW - corona KW - outbreak KW - quarantine JF - Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin JO - Euro Surveill. VL - 25 IS - 10 N2 - On 5 February 2020, in Yokohama, Japan, a cruise ship hosting 3,711 people underwent a 2-week quarantine after a former passenger was found with COVID-19 post-disembarking. As at 20 February, 634 persons on board tested positive for the causative virus. We conducted statistical modelling to derive the delay-adjusted asymptomatic proportion of infections, along with the infections' timeline. The estimated asymptomatic proportion was 17.9% (95% credible interval (CrI): 15.5-20.2%). Most infections occurred before the quarantine start. SN - 1560-7917 UR - https://www.unboundmedicine.com/medline/citation/32183930/full_citation L2 - http://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2020.25.10.2000180 DB - PRIME DP - Unbound Medicine ER -