Evidence map›Paper›PMID 32983543›Full record

ArticleNew microbes and new infections2020

Individuals with a Rh-positive but not Rh-negative blood group are more vulnerable to SARS-CoV-2 infection: demographics and trend study on COVID-19 cases in Sudan.

S A H Taha, M E M Osman, E A A Abdoelkarim, M A I Holie, M M Elbasheir, N M K Abuzeid, S A Al-Thobaiti, S B Fadul, E H E Konozy

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Article in New microbes and new infections, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  15. SARS-CoV-2 andNew microbes and new infections · 2020
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

S A H TahaDepartment of Clinical Chemistry, Faculty of Medical Laboratory Sciences, Alzaeim Alazhari University, Khartoum, Sudan.
M E M OsmanZoology Department, Faculty of Sciences, Khartoum University, Khartoum, Sudan.
E A A AbdoelkarimDepartment of Microbiology, National Ribat University, Khartoum, Sudan.
M A I HolieDepartment of Microbiology and Immunology, Faculty of Medical Laboratory Sciences, Alzaeim Alazhari University, Sudan.
M M ElbasheirDepartment of Parasitology and Medical Entomology, Faculty of Medical Laboratory Sciences, Alzaiem Alazhari University, Khartoum, Sudan.
N M K AbuzeidDepartment Medical Microbiology, Omdurman Islamic University, Khartoum, Sudan.
S A Al-ThobaitiDepartment of Biology, University College Turabah, Taif University, Saudi Arabia.
S B FadulAfrica City of Technology, Khartoum, Sudan.
E H E KonozyBiotechnology Department, Africa City of Technology, Khartoum, Sudan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). In Sudan, several haematological studies were conducted to study the ABO blood group distribution among the population, in which the O blood group was dominant followed by the A blood group. However, there is no systematic study into any correlation between COVID-19 and the population's blood group types, therefore we have intended to study the possible effect of blood group on the acquisition of SARS-CoV-2 infection. A questionnaire-based case-control study was carried out on 557 individuals with COVID-19 in Sudan; factors such as age, blood group, previous malaria infection, history of ailments such as diabetes, hypertension and symptoms suffered were also considered and analysed. More women were infected than men, and individuals between 25 and 35 years were the most affected age group. O Rhesus-positive (O+) blood group was the least affected by the disease while A Rhesus-positive (A+) individuals were the most vulnerable. Fatigue, fever and loss of smell were the major symptoms among the patients, but 13% of SARS-COV-2-positive individuals remained asymptomatic. As the Sudan population is largely constituted of O Rhesus-positive inhabitants (approximately 50%) these results might explain the relatively lower COVID-19 incidence in the country.

Indexed as

Blood group Ablood group Ocoronavirus disease 2019questionnaireSudansusceptibility

Identifiers

PMID32983543
PMCPMC7505818

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Registered trials

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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.