{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T17:16:17Z","timestamp":1791566177858,"version":"4.3.4"},"reference-count":21,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2021,2,2]],"date-time":"2021-02-02T00:00:00Z","timestamp":1612224000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vox Sanguinis"],"published-print":{"date-parts":[[2021,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background and objectives<\/jats:title><jats:p>Reports on the association of the ABO phenotypes with infection by the SARS\u2010CoV\u20102 virus have mostly come from countries with high infection rates. This study examined the possible association between SARS\u2010CoV\u20102 infection and the ABO phenotype in Black Africa.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and methods<\/jats:title><jats:p>This report is from a single centre where both asymptomatic and symptomatic patients were quarantined. At the time of this report, Oyo State, Nigeria had carried out 15\u00a0733 tests of which 3119 were positive for the virus with 1952 recoveries and 37 deaths. The ABO distribution of patients was compared with that of a blood donor population.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Of the 302 participants, 297 (98%) had their blood group determined, asymptomatic and symptomatic individuals were 123 (40\u00b77%) and 179 (59\u00b73%) respectively. Blood group O was significantly less represented among the patients (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00\u00b701) while blood groups B and AB were significantly more represented (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00\u00b701, <jats:italic>P<\/jats:italic>\u00a0=\u00a00\u00b703 respectively). Patients with anti\u2010B (groups A and O) were significantly less represented than those without anti\u2010B (B and\/or AB): B and AB (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00\u00b7001), B (<jats:italic>P<\/jats:italic>\u00a0=\u00a00\u00b7002), AB (<jats:italic>P<\/jats:italic>\u00a0=\u00a00\u00b701). There was no difference in the blood group distribution of symptomatic and asymptomatic patients (\u03c7<jats:sup>2<\/jats:sup> (3, N\u00a0=\u00a0302)\u00a0=\u00a02\u00b729; <jats:italic>P<\/jats:italic>\u00a0=\u00a00\u00b751), but symptomatic patients with anti\u2010A (groups B and O) were more represented than asymptomatic patients with anti\u2010A (\u03c7<jats:sup>2<\/jats:sup> 4\u00b789; <jats:italic>P<\/jats:italic>\u00a0=\u00a00\u00b703).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The higher prevalence of blood group O and more potent beta haemolysins (anti\u2010B antibodies) are likely reasons for the lower infectivity by the SARS\u2010CoV\u20102 virus and severity of COVID\u201019 disease in the community.<\/jats:p><\/jats:sec>","DOI":"10.1111\/vox.13077","type":"journal-article","created":{"date-parts":[[2021,2,6]],"date-time":"2021-02-06T03:29:55Z","timestamp":1612582195000},"page":"910-915","source":"Crossref","is-referenced-by-count":13,"title":["Association of the ABO blood group with SARS\u2010CoV\u20102 infection in a community with low infection rate"],"prefix":"10.1111","volume":"116","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7355-7166","authenticated-orcid":false,"given":"Taiwo R.","family":"Kotila","sequence":"first","affiliation":[{"name":"Department of Haematology College of Medicine University of Ibadan Nigeria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Temitope O.","family":"Alonge","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics and Trauma College of Medicine University of Ibadan Nigeria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adeola","family":"Fowotade","sequence":"additional","affiliation":[{"name":"Clinical Virology Unit, Medical Microbiology and Parasitology Department and Biorepository and Clinical Virology Laboratory College of Medicine University of Ibadan Nigeria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Olufisayo I.","family":"Famuyiwa","sequence":"additional","affiliation":[{"name":"Department of Chemical Pathology University College Hospital Ibadan Nigeria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adebola S.","family":"Akinbile","sequence":"additional","affiliation":[{"name":"Oyo State Ministry of Health Ibadan Nigeria"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,2,2]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.2147\/PHMT.S162570"},{"key":"e_1_2_10_3_1","doi-asserted-by":"crossref","unstructured":"ZhaoJ HuangH LiD et\u00a0al.:Relationship between the ABO blood group and the covid\u201019 susceptibility.2020.https:\/\/doi.org\/10.1093\/cid\/ciaa1150.","DOI":"10.1093\/cid\/ciaa1150"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/bjh.16811"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.antiviral.2020.104880"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.3906\/sag-2005-395"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMoa2020283"},{"issue":"2","key":"e_1_2_10_8_1","first-page":"e93","article-title":"COVID\u201019 and ABO blood group: another viewpoint","volume":"190","author":"Gerad 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