ArticleEmerging infectious diseases2004
Risk factors for SARS among persons without known contact with SARS patients, Beijing, China.
Article in Emerging infectious diseases, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 95 papers, 12 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
95 citing papers in PubMed, 12 syntheses or guidelines pooled it.
- The effectiveness of hand hygiene interventions for preventing community transmission or acquisition of novel coronavirus or influenza infections: a systematic review.BMC public health · 2022Pooled it
- Associations Between Wearing Masks and Respiratory Viral Infections: A Meta-Analysis and Systematic Review.Frontiers in public health · 2022Pooled it
- How efficient are facial masks against COVID-19? Evaluating the mask use of various communities one year into the pandemicTurkish journal of medical sciences · 2021Pooled it
- Facemask use in community settings to prevent respiratory infection transmission: A rapid review and meta-analysis.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2021Pooled it
- Airborne transmission of COVID-19 and the role of face mask to prevent it: a systematic review and meta-analysis.European journal of medical research · 2021Pooled it
- 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
- Face Mask Use in the Community for Reducing the Spread of COVID-19: A Systematic Review.Frontiers in medicine · 2020Pooled it
- Pooled it
- The use of masks and respirators to prevent transmission of influenza: a systematic review of the scientific evidence.Influenza and other respiratory viruses · 2012Pooled it
- Physical interventions to interrupt or reduce the spread of respiratory viruses.The Cochrane database of systematic reviews · 2011Pooled it
- Physical interventions to interrupt or reduce the spread of respiratory viruses: systematic review.BMJ (Clinical research ed.) · 2009Pooled it
- Efficacy of face mask in preventing respiratory virus transmission: A systematic review and meta-analysis.Travel medicine and infectious diseasePooled it
- Tolerability of facemask during physical exercises during COVID-19 pandemic: A systematic review.Journal of public health in Africa · 2025Review
- An optimal control model for Covid-19 spread with impacts of vaccination and facemask.Heliyon · 2023Article
- Occupational risks associated with severe COVID-19 disease and SARS-CoV-2 infection - a Swedish national case-control study conducted from October 2020 to December 2021.Scandinavian journal of work, environment & health · 2023Article
- Occupational risks for infection with influenza A and B: a national case-control study covering 1 July 2006-31 December 2019.Occupational and environmental medicine · 2023Article
- Computational identification of differentially-expressed genes as suggested novel COVID-19 biomarkers: A bioinformatics analysis of expression profiles.Computational and structural biotechnology journal · 2023Article
- Article
- Human behaviour, NPI and mobility reduction effects on COVID-19 transmission in different countries of the world.BMC public health · 2022Article
- Nonpharmaceutical interventions to prevent viral respiratory infection in community settings: an umbrella review.ERJ open research · 2022Review
35 more citing papers are in PubMed but not listed here.
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.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Most cases of severe acute respiratory syndrome (SARS) have occurred in close contacts of SARS patients. However, in Beijing, a large proportion of SARS cases occurred in persons without such contact. We conducted a case-control study in Beijing that compared exposures of 94 unlinked, probable SARS patients with those of 281 community-based controls matched for age group and sex. Case-patients were more likely than controls to have chronic medical conditions or to have visited fever clinics (clinics at which possible SARS patients were separated from other patients), eaten outside the home, or taken taxis frequently. The use of masks was strongly protective. Among 31 case-patients for whom convalescent-phase (>21 days) sera were available, 26% had immunoglobulin G to SARS-associated coronavirus. Our finding that clinical SARS was associated with visits to fever clinics supports Beijing's strategy of closing clinics with poor infection-control measures. Our finding that mask use lowered the risk for disease supports the community's use of this strategy.
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.