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Type O, Rh blood group may be associated with reduced risk of COVID-19

Type O, Rh blood group may be associated with reduced risk of COVID-19

 


November 24, 2020

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O and rhesus negative, or Rh– blood, was associated with a slightly lower risk of COVID-19 infection and severe illness or death. Annual report of internal medicine..

This study Blood type can affect risk is connected with COVID-19 infection And severity.

Blood test tube photo
According to a study published in the Annals of Internal Medicine, ABO blood group and rhesus negative (Rh–) blood groups are associated with a slightly lower risk of COVID-19 infection and severe illness or death. It was. Source: Adobe Stock.

“Uncertainty about ABO or Rh blood group and SARS-CoV-2 infection continues.” Joel G. Ray, MD, MSc, Written by a professor and colleague at the University of Toronto School of Medicine. “Therefore, this population-based study was conducted to assess SARS-CoV-2 infection and severe COVID-disease in relation to ABO and Rh status.”

Ray et al. Conducted SARS-CoV-2 testing in Ontario, Canada, from 2007 to 2019 by blood grouping and later using the viral RNA polymerase chain reaction test in adults and children. Conducted a population-based retrospective cohort study. From mid-January to June.

They used a national database to collect information on SARS-CoV-2 testing, hospitalization, emergency outpatients, existing status, demographics, and income.

A total of 225,556 people who underwent ABO blood group and SARS-CoV-2 laboratory tests were included in the study. Of these, 36.3% were A-type, 4.5% were AB-type, 14.9% were B-type, and 44.3% were O-type. Of the participants, 13.1% had Rh– status.

Ray et al. Have adjusted relative risk (aRR) of SARS-CoV-2 infection in patients with ABO blood group system of 0.88 (95% CI, 0.84-0.92; ARD = 3.9 per 1000; 95% CI, 5.4 to 2.5). I decided that there was. A, AB, B blood types.

In addition, they have Rh blood group protection against COVID-19 infection (aRR = 0.79; CI, 0.73 to 0.85; ARD = 6.8 / 1000; 95% CI, 8.9 to 4.7) and O blood group. Type (aRR = 0.74; 95% CI, 0.66-0.83; ARD = 8.2 per 1000; 95% CI, 10.8-5.3).

Patients with ABO blood group had a lower risk of severe COVID-19 or death compared to all other blood groups (aRR = 0.87; 95% CI, 0.78-0.97;), according to researchers. ARD = 0.8 per 1000; 95% CI, 1.4 to 0.2). We also found that people with Rh – blood had a lower risk of severe COVID-19 or death than those with Rh-positive blood (aRR = 0.82; 95% CI, 0.68). -0.96; ARD = 1.1 per 1000; 95% CI, 2.0-0.2).

Based on the findings, Ray and colleagues concluded that ABO blood group may be associated with low-risk COVID-19 infection, severe illness, or death.

“At best, a small proportion of SARS-CoV-2 infections or related illnesses in the entire population can be prevented by some undetermined traits given by ABO blood group, and will probably be further enhanced by Rh status. “Ray and colleagues write. “It has not yet been determined whether this information may affect COVID-19 prevention or treatment strategies.”

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