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Document Type
Rapid Review
Review Code
EPM210602 RR
Question Submitted
June 22, 2021
Date Completed
July 12, 2021
Status
3. Completed
Research Team
Epidemiology & Modelling
Document Type
Rapid Review
Review Code
EPM210602 RR
Question Submitted
June 22, 2021
Date Completed
July 12, 2021
Status
3. Completed
Research Team
Epidemiology & Modelling
Key Findings
Long COVID-19 is likely to increase healthcare demands across the health system, including emergency departments, hospital admissions, primary care visits, specialists appointments, and home care and rehabilitation services.
The clinical care burden of long COVID-19 is the greatest in the first 3 months after testing and is likely to place the greatest demand on primary care services.
Patients with severe COVID-19 illness are more likely to place longer-term demands (4-6 months) on specialist care due to respiratory, circulatory, endocrine, metabolic, psychiatric and unspecified conditions.
Category
Clinical Presentation
Epidemiology
Subject
Long Covid
Health Planning
Clinical Presentation
Population
All
Clinical Setting
Ambulatory
Community
Emergency
ICU
Long Term Care
Medicine Unit
Primary care
Public Health
Priority Level
Level 1 2-3 days
Cite As
McLean, M; Williams-Roberts, H; Reeder, B; Howell-Spooner, B; Ellsworth, C. What are long COVID's demands on the healthcare system, and its severity of the illness? 2021 Jul 12, Document no.: EPM210602 RR. In: COVID-19 Rapid Evidence Reviews [Internet]. SK: SK COVID Evidence Support Team, c2021. 23 p. (CEST rapid review report).
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Document Type
Rapid Review
Review Code
EPM210601 RR
Question Submitted
June 22, 2021
Date Completed
July 9, 2021
Status
3. Completed
Research Team
Epidemiology & Modelling
Document Type
Rapid Review
Review Code
EPM210601 RR
Question Submitted
June 22, 2021
Date Completed
July 9, 2021
Status
3. Completed
Research Team
Epidemiology & Modelling
Key Findings
The frequency of Long COVID symptoms varies widely across studies based on populations studied, duration of follow up and methods of assessment of symptoms.
It is estimated that 1 in 50 persons experience Long COVID symptoms after 12 weeks; however, higher estimates up to 80% have been reported in studies with a greater proportion of persons who were previously hospitalized. A recent study of a mixed cohort of 96 persons found that only 22.9% had no symptoms at 12 months post diagnosis.
A wide range of symptoms affecting multiple organ systems has been reported. For many persons symptoms improve over time while others experience persistent and/or new symptoms. Among studies with the longest duration of follow up, the most frequently reported symptoms included fatigue (up to 65%), dyspnea (up to 50%), headache (up to 45%), anosmia/ageusia (up to 25%), cognitive memory/concentration (up to 39.6%) and sleep disorders (up to 26%).
Few studies estimated the duration of symptoms with estimates ranging from 2.2% for 6 months and 27% for 7-9 months.
The mechanism(s) leading to Long COVID remain unclear but those experiencing post acute sequelae tend to be older, have a greater number of symptoms during the acute phase of illness or manifest specific symptoms and live with multiple comorbid conditions such as obesity.
The lack of consensus on a definition of Long COVID contributes to marked variations in robust prevalence estimates.
Category
Clinical Presentation
Epidemiology
Subject
Long Covid
Symptoms
Clinical Presentation
Population
All
Clinical Setting
Ambulatory
Community
ICU
Long Term Care
Medicine Unit
Primary care
Public Health
Priority Level
Level 1 2-3 days
Cite As
Williams-Roberts, H; Groot, G; Reeder, B; Howell-Spooner, B; Ellsworth, C. What is the incidence and duration of Long COVID cases? 2021 Jul 09, Document no.: EPM210601 RR. In: COVID-19 Rapid Evidence Reviews [Internet]. SK: SK COVID Evidence Support Team, c2021. 19 p. (CEST rapid review report).
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