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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.

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Authors+Show Affiliations

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

MeSH

AdolescentAdultAge DistributionAgedAged, 80 and overAsymptomatic InfectionsBetacoronavirusCOVID-19ChildChild, PreschoolCoronavirus InfectionsDisease OutbreaksFemaleHumansInfantInfant, NewbornMaleMiddle AgedModels, StatisticalPneumonia, ViralQuarantineSARS-CoV-2Sex DistributionShipsTravelYoung Adult

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32183930

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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 DB - PRIME DP - Unbound Medicine ER -