ArticleEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin2020
Estimating the asymptomatic proportion of coronavirus disease 2019 (COVID-19) cases on board the Diamond Princess cruise ship, Yokohama, Japan, 2020.
Article in Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to 7 registered trials, which are not on this map. Cited by 1,242 papers, 6 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Personalized Health Education Against the Health Damage of COVID-19 Epidemic in Hungary (PROACTIVE-19)
Evaluation of the Immune Response in Symptomatic and Asymptomatic Patients' Diagnosed Witih COVID-19
Asymptomatic SARS- CoV2 Infection Among Healthcare Workers in Three University Hospitals: A Cross Sectional Study.
Serologic Surveillance for SARS-CoV-2 (COVID-19) in a Prospective Cohort of Health Care
Prospective Observational Study Evaluating the Increased Risk of SARS-CoronaVirus-2 (SARS-CoV-2) Infection Associated With Endoscopic Procedures (DECORE Study)
COVID-19 in Vitro Diagnostic Near-patient Testing in Care Environments Using a Cluster Randomised Open-label Trial Design in an East London Care Home Population
Leveraging Community Health Workers to Improve COVID-19 Testing and Mitigation Among Criminal Justice-involved Individuals Accessing a Corrections-focused Community-based Organization
Who cites it
1,242 citing papers in PubMed, 6 syntheses or guidelines pooled it, 2,539 citations in OpenAlex.
- Genetic and Epigenetic Determinants of COVID-19 Susceptibility: A Systematic Review.Current medicinal chemistry · 2025Pooled it
- Estimating Hidden Population Size of COVID-19 using Respondent-Driven Sampling Method - A Systematic Review.Infectious disorders drug targets · 2024Pooled it
- Comparative effectiveness of contact tracing interventions in the context of the COVID-19 pandemic: a systematic review.European journal of epidemiology · 2023Pooled it
- Meta-analysis of the severe acute respiratory syndrome coronavirus 2 serial intervals and the impact of parameter uncertainty on the coronavirus disease 2019 reproduction number.Statistical methods in medical research · 2022Pooled it
- Bayesian inference for asymptomatic COVID-19 infection rates.Statistics in medicine · 2022Pooled it
- Seroprevalence of SARS-CoV-2 Antibodies in Africa: A Systematic Review and Meta-Analysis.International journal of environmental research and public health · 2022Pooled it
- Article
- Hantavirus Cluster Linked to Cruise Ship Travel: A Comprehensive Review of a Looming Global Public Health Concern.Cureus · 2026Review
- Determinants of COVID-19 outbreak size in elderly residential facilities in Okinawa Prefecture, Japan, April to June 2022.IJID regions · 2026Article
- Evaluating adherence to COVID-19 quarantine protocols at two international ground crossings in Savannakhet Province, Lao PDR.Tropical medicine and health · 2026Article
- Effectiveness and Safety of COVID-19 Vaccination in Patients With Heart Failure: A Nationwide Retrospective Cohort Study.Korean circulation journal · 2026Article
- Real-time spatiotemporal tracking of infectious outbreaks in confined environments with a host-pathogen agent-based system.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Estimation of undetected asymptomatic infections of COVID-19: a mathematical modeling approach.Scientific reports · 2025Article
- Article
- Seroprevalence and molecular detection of SARS-CoV-2 among apparently healthy healthcare workers and patients in a Nigerian tertiary hospital.BMC infectious diseases · 2025Article
- Seroprevalence of Immunoglobulin M and G antibodies to severe acute respiratory syndrome coronavirus 2 infection in Iwo, Nigeria.BMC infectious diseases · 2025Article
- Increased complications of proximal femur fractures during the COVID-19 pandemic: a nationwide medical claims database study in Japan.Journal of bone and mineral metabolism · 2025Article
- Article
- Practicing pharmacist education based on the experiences of medical support on the cruise ship Diamond Princess.BMC medical education · 2025Article
- A replicon-based COVID-19 vaccine candidate delivered by tobacco mosaic virus-like particles.Vaccine · 2025Article
1,182 more citing papers are in PubMed but not listed here.
Corrections and comments
- Erratum issued
Authors and funding
4 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
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.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.