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Atleast 1 in 3 COVID-19 infections are asymptomatic, recent study suggests

January 25, 2021
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Covid-19
-
Posted by Intrinsic Analytics Inc.
MH_Asymptomatic_COVID_1200x628-1200×610-1

According to a recent study published in the Annals of Internal Medicine, atleast one in three COVID-19 infection are asymptomatic. The study reviewed 61 studies and reports of which 43 used PCR testing of the nasopharyngeal swabs to detect the current SARS CoV-2 infection and 18 studies used antibody testing to detect the current or prior infection. The study included observational, descriptive studies and reports of mass screening for SAR CoV-2 (cross sectional or longitudinal in design) published through November 2020.

According to the study, infected people without symptoms – both presymptomatic and asymptomatic – account for more than 40% of all SARS CoV-2 transmission. As per the study, the highest-quality evidence comes from nationwide, representative serosurveys of England (n = 365 104) and Spain (n = 61 075), which suggest that at least one third of SARS-CoV-2 infections are asymptomatic.

Source: The Annals of Internal Medicine

A serosurvey is the collection and testing of blood (or proxy specimen) from individuals of a defined population over a specific period to estimate the prevalence of IgG antibodies. The presence of IgG antibodies serve as an indicator of exposure, disease burden and immunity towards the infection.

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Intrinsic Analytics is Manitoba's premier bioinformation services company. We provide personalized and customizable bioinformation and biochemical analysis for individuals, commercial enterprises and government agencies. We offer two main platforms, occupational health and personal health. In addition, we engage in health research aimed at developing new health related assays.


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Atleast 1 in 3 COVID-19 infections are asymptomatic, recent study suggests | Intrinsic Analytics