Read the original article on Best Life. The researchers at St. Michael’s Hospital in Toronto, Canada, examined the test results of 225,556 Canadians who had been tested for COVID-19 between Jan. 15 and Jun. 30. They looked at both how likely a patient was to contract COVID-19, and how likely they were to become seriously ill (or even die) from it if they did. The results were notable: Adjusting for demographics and co-morbidities, the risk for a COVID-19 diagnosis was 12 percent lower for people with type O blood and the risk for severe COVID-19 or death was 13 percent lower, compared to those with A, AB, or B blood types. O is the most common blood type in the U.S.: 37 percent of white Americans fall into this category, according to the American Red Cross, with the numbers rising to 47 percent among African-Americans, 53 percent among Latinx-Americans, and 39 percent of Asian-Americans. And for more signs you could’ve contracted the virus, check out If You Have This Symptom, There’s an 80 Percent Chance You Have COVID. Those four main blood groups—A, AB, B, and O—can be Rh-positive or Rh-negative, meaning that there are 8 blood groups in total. When the researchers looked at this second classification, there was further good news—people in any blood group which is Rh-negative are also “somewhat protected” from the virus. “An Rh− status seemed protective against SARS-CoV-2 infection,” the study authors wrote. Additionally, “Rh− had a lower [adjusted relative risk] of severe COVID-19 illness or death.” If a patient was O-negative, they were particularly protected from the novel coronavirus, the authors noted. “Rh− blood type was protective against SARS-CoV-2 infection, especially for those who were O-negative,” they wrote.ae0fcc31ae342fd3a1346ebb1f342fcb Unfortunately, this is a much more rare blood type. The American Red Cross reports that 8 percent of white Americans, 4 percent of African-Americans, 4 percent of Latinx-Americans, and 1 percent of Asian-Americans are O-negative. And for more on the state of the pandemic, check out These 2 Places Could Be Closing Soon, White House Official Warns. For a March study out of the Southern University of Science and Technology in Shenzhen, China, scientists tracked the blood types of nearly 2,200 COVID-19 patients in Chinese hospitals, along with those of about 27,000 individuals who didn’t have COVID-19 in the same areas. The results showed that those with A blood types were significantly more likely to contract the coronavirus compared with other blood types. And for more regular updates on the virus, sign up for our daily newsletter. The new study’s co-author, Joel Ray, MD, of St. Michael’s Hospital, suggested that people with these more resistant blood types may have already developed antibodies that can recognize certain aspects of the novel coronavirus and are therefore better prepared to fight it off. “Our next study will specifically look at such antibodies, and whether they explain the protective effect,” Ray told Reuters. And for more on the latest COVID-19 news, find out How Likely You Are to Catch COVID in the Next Month, Expert Says.
