ArticleEpidemiology and infection2007
Duration and distance of exposure are important predictors of transmission among community contacts of Ontario SARS cases.
Article in Epidemiology and infection, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
20 citing papers in PubMed, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.
- Physical distancing, face masks, and eye protection to prevent person-to-person transmission of SARS-CoV-2 and COVID-19: a systematic review and meta-analysis.Lancet (London, England) · 2020Pooled it
- Progress and challenges in development of minimum essential dataset for disease surveillance through a One Health lens: a scoping review.Infectious diseases of poverty · 2026Article
- Risk assessment of communicable respiratory diseases transmission based on social contact networks: a primary school contact data survey conducted with portable high-precision devices.BMC public health · 2025Article
- Assessing individual risk and the latent transmission of COVID-19 in a population with an interaction-driven temporal model.Scientific reports · 2023Article
- Reconstructing social mixing patterns via weighted contact matrices from online and representative surveys.Scientific reports · 2022Article
- Concentric regulatory zones failed to halt surging COVID-19: Brooklyn 2020.Frontiers in public health · 2022Article
- Quantifying SARS-CoV-2 Infection Risk Within the Google/Apple Exposure Notification Framework to Inform Quarantine Recommendations.Risk analysis : an official publication of the Society for Risk Analysis · 2022Article
- Review of infective dose, routes of transmission and outcome of COVID-19 caused by the SARS-COV-2: comparison with other respiratory viruses.Epidemiology and infection · 2021Review
- Digital proximity tracing on empirical contact networks for pandemic control.Nature communications · 2021Article
- Trends in non-pharmaceutical intervention (NPI) related community practice for the prevention of COVID-19 in Addis Ababa, Ethiopia.PloS one · 2021Observational
- Ventilator management in the age of COVID-19: response to "Logistic and organizational aspects of a dedicated intensive care unit for COVID-19 patients".Critical care (London, England) · 2020Article
- Article
- Contact diaries versus wearable proximity sensors in measuring contact patterns at a conference: method comparison and participants' attitudes.BMC infectious diseases · 2016Article
- Tracking social contact networks with online respondent-driven detection: who recruits whom?BMC infectious diseases · 2015Article
- Social mixing patterns in rural and urban areas of southern China.Proceedings. Biological sciences · 2014Article
- How should social mixing be measured: comparing web-based survey and sensor-based methods.BMC infectious diseases · 2014Article
- A low-cost method to assess the epidemiological importance of individuals in controlling infectious disease outbreaks.BMC medicine · 2013Article
- Close encounters of the infectious kind: methods to measure social mixing behaviour.Epidemiology and infection · 2012Review
- Quantifying the impact of community quarantine on SARS transmission in Ontario: estimation of secondary case count difference and number needed to quarantine.BMC public health · 2009Article
- A mechanistic model of infection: why duration and intensity of contacts should be included in models of disease spread.Theoretical biology & medical modelling · 2009Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We report attack rates and contact-related predictors among community contacts of severe acute respiratory syndrome (SARS) cases from the 2003 Toronto-area outbreak. Community contact data was extracted from public health records for single, well-defined exposures to a SARS case. In total, 8662 community-acquired exposures resulted in 61 probable cases; a crude attack rate of 0.70% [95% confidence interval (CI) 0.54-0.90]. Persons aged 55-69 years were at higher risk of acquiring SARS (1.14%) than those either younger (0.60%) or older (0.70%). In multivariable analysis exposures for at least 30 min at a distance of <or=1 m increased the likelihood of becoming a SARS case 20.4-fold (95% CI 11.8-35.1). Risk related to duration of illness in the source case at time of exposure was greatest for illness duration of 7-10 days (rate ratio 3.4, 95% CI 1.9-6.1). Longer and closer proximity exposures incurred the highest rate of disease. Separate measures of time and distance from source cases should be added to minimum datasets for the assessment of interventions for SARS and other emerging diseases.
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.