ArticleBMJ open2020
Epidemiological investigation of the first 5685 cases of SARS-CoV-2 infection in Qatar, 28 February-18 April 2020.
Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 5 of them syntheses that pooled it.
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Who cites it
60 citing papers in PubMed, 5 syntheses or guidelines pooled it, 90 citations in OpenAlex.
- Multimorbidity and frailty are associated with poorer SARS-CoV-2-related outcomes: systematic review of population-based studies.Aging clinical and experimental research · 2024Pooled it
- Severe Outcomes Associated With SARS-CoV-2 Infection in Children: A Systematic Review and Meta-Analysis.Frontiers in pediatrics · 2022Pooled it
- Prevalence of comorbid tuberculosis amongst COVID-19 patients: A rapid review and meta-analysis.International journal of clinical practice · 2021Pooled it
- A meta-analysis on the risk factors adjusted association between cardiovascular disease and COVID-19 severity.BMC public health · 2021Pooled it
- Active pulmonary tuberculosis and coronavirus disease 2019: A systematic review and meta-analysis.PloS one · 2021Pooled it
- Assessing the Variation in COVID-19 Severity Among the Different Nationalities Living in Qatar.Cureus · 2024Article
- Article
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- Epidemiological Determinants of Patient Non-Conveyance to the Hospital in an Emergency Medical Service Environment.International journal of environmental research and public health · 2023Article
- Key Lessons from COVID-19: A Narrative Review Describing Qatar's Multifactorial Approach in Executing a Vaccination Campaign.Vaccines · 2023Review
- All-cause and COVID-19 mortality in Qatar during the COVID-19 pandemic.BMJ global health · 2023Article
- Sickness absenteeism among primary health care workers in Qatar before and during the COVID-19 pandemic.Journal of occupational medicine and toxicology (London, England) · 2023Article
- Ethnic inequalities in COVID-19 infection, hospitalisation, intensive care admission, and death: a global systematic review and meta-analysis of over 200 million study participants.EClinicalMedicine · 2023Article
- Super-spreading social events for COVID-19 transmission: evidence from the investigation of six early clusters in Bahrain.Frontiers in public health · 2023Article
- Critical care tele-pharmacy services during COVID-19 pandemic: A qualitative exploration of healthcare practitioners' perceptions.Journal of clinical pharmacy and therapeutics · 2022Article
- Cardiovascular Risks and Outcome in COVID-19 Positive Patients With Cardiovascular Disease Attending Primary Health Care Corporation in Qatar: A Retrospective Cohort Study.Mayo Clinic proceedings. Innovations, quality & outcomes · 2022Article
- COVID-19 disease severity in persons infected with the Omicron variant compared with the Delta variant in Qatar.Journal of global health · 2022Article
- COVID-19 disease in professional football players: symptoms and impact on pulmonary function and metabolic power during matches.Physiological reports · 2022Article
- Characteristics and clinical outcomes of COVID-19 patients with pulmonary disorders: A single-center, retrospective observational study.Health science reports · 2022Article
- Severity of Illness in Persons Infected With the SARS-CoV-2 Delta Variant vs Beta Variant in Qatar.JAMA internal medicine · 2022Article
Corrections and comments
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Authors and funding
16 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo define the epidemiological curve of COVID-19 in Qatar and determine factors associated with severe or critical illness.
designCase series of first 5685 COVID-19 cases in Qatar. SETTING AND
participantsAll confirmed COVID-19 cases in the State of Qatar between 28 February and 18 April 2020.
main outcome measuresNumber of total and daily new COVID-19 infections; demographic characteristics and comorbidity burden and severity of infection; factors associated with severe or critical illness.
resultsBetween 28 February and 18 April 2020, 5685 cases of COVID-19 were identified. Median age was 34 (IQR 28-43) years, 88.9% were male and 8.7% were Qatari nationals. Overall, 83.6% had no concomitant comorbidity, and 3.0% had three or more comorbidities. The overwhelming majority (90.9%) were asymptomatic or with minimal symptoms, with 2.0% having severe or critical illness. Seven deaths were observed during the time interval studied. Presence of hypertension or diabetes was associated with a higher risk of severe or critical illness, but age was not. The epidemiological curve indicated two distinct patterns of infection, a larger cluster among expatriate craft and manual workers and a smaller one among Qatari nationals returning from abroad during the epidemic.
conclusionCOVID-19 infections in Qatar started in two distinct clusters, but then became more widespread in the population through community transmission. Infections were mostly asymptomatic or with minimal symptoms and associated with very low mortality. Severe/critical illness was associated with presence of hypertension or diabetes but not with increasing age.
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