2 stud­ies sug­gest blood type O at less COVID-19 risk

Manila Bulletin - - Front Page -

ANKARA – Two med­i­cal stud­ies have sug­gested that peo­ple with blood type O may be at lower risk of con­tract­ing the novel coron­avirus.

A Dan­ish study, con­ducted by 11 re­searchers based on in­for­ma­tion of 473,654 in­di­vid­u­als tested for COVID-19, found that blood group O was as­so­ci­ated with a de­creased risk of coron­avirus in­fec­tion.

“We demon­strate that blood group O is sig­nif­i­cantly as­so­ci­ated with re­duced sus­cep­ti­bil­ity to SARS-CoV-2 in­fec­tion,” said the study pub­lished Wed­nes­day on Blood Ad­vances, a peer-re­viewed med­i­cal jour­nal of the Amer­i­can So­ci­ety of He­ma­tol­ogy.

The re­search in­di­cated that in­di­vid­u­als with blood types A,

B, and AB were also at higher

risk of ex­hibit­ing throm­bo­sis – the clot­ting of blood in­side a blood ves­sel – and car­dio­vas­cu­lar dis­eases, which are sig­nif­i­cant co-oc­cur­ring con­di­tions among hos­pi­tal­ized COVID-19 pa­tients.

Sim­i­lar re­sults were found by a Cana­dian med­i­cal study con­ducted by 14 re­searchers based on data col­lected from in­ten­sive care unit pa­tients in six met­ro­pol­i­tan Van­cou­ver hos­pi­tals.

“COVID-19 pa­tients with blood group A or AB ap­pear to ex­hibit a greater dis­ease sever­ity than pa­tients with blood group O or B,” found the study, which was pub­lished in the same jour­nal, adding that in­di­vid­u­als with blood group O were re­ported to be "less sus­cep­ti­ble to SARS-CoV-2 in­fec­tion.”

The study also noted that COVID-19 pa­tients of blood group A or AB had a higher risk of re­quir­ing me­chan­i­cal ven­ti­la­tion and longer du­ra­tion in in­ten­sive care, com­pared to those with blood group O or B.

While 84 per­cent of pa­tients with blood groups A or AB re­quired me­chan­i­cal ven­ti­la­tion in SARS-CoV-2 in­fec­tion, that level was 61 per­cent for pa­tients with blood types O or B, ac­cord­ing to the re­search.

The me­dian length of stay­ing in in­ten­sive care units was 13.5 days for pa­tients with A or AB blood types, while it was only nine days for pa­tients with O or B blood types, the study found.

The num­ber of COVID-19 cases in the world stood around 38.5 mil­lion and deaths close to 1.1 mil­lion on Thurs­day, ac­cord­ing to Johns Hop­kins Univer­sity data. (Anadolu/PNA)

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