By Chuks Ekpeneru
People with blood types A, B, and AB stand a high risk of Covid-19 infection, two recent medical studies conducted recently have revealed.
The study further found that people with blood type O may be at lower risk of contracting the novel coronavirus.
One of the studies conducted by 11 Danish 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.
In another research, 14 researchers in a Canadian medical study based on data collected from intensive care unit patients in six metropolitan Vancouver hospitals said that “COVID-19 patients with blood group A or AB appear to exhibit a greater disease severity than patients with blood group O or B,”.
This group study revealed 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% of patients with blood groups A or AB required mechanical ventilation in SARS-CoV-2 infection, that level was 61% 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.
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.