| 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. Baker receives first COVID-19 vaccine dose to search for ways to make a difference in your community at Anger as bee-killer pesticide ban is temporarily lifted in France Covid-19 … Is blood type the main risk factor? These labels refer to the kinds of antigens — proteins that kick off an immune response — sitting on the surface of all the cells in someone’s body. However, multivariate analysis found that people who were Rh positive were more likely to test positive than people who were Rh negative, and those with B or AB blood were more likely to test positive than those with type O blood. The provider’s terms, conditions and policies apply. Here, we use observational healthcare data on 14,112 individuals tested for … “These findings need to be further explored to determine if there is something inherent in these blood types that might potentially confer protection or induce risk in individuals,” Dua said. And officials at AU say early studies show that may not be too far off. On the other hand, having Type O blood … While people with Type O blood had a … French company launches €100m project to create artificial skin Has Brexit changed UK-France ferry and air travel refund rights? A large study adds to evidence that people with type O or Rh−negative blood may be at slightly lower risk from the new coronavirus. In this population, having Type A blood was associated with a 45% increased risk of having severe COVID-19. Information for the HMS Community (Updated January 2021). You can also manage your communication preferences by updating your account at anytime. But some experts who have looked at the research say that the findings … , HMS assistant professor of surgery at Mass General. This indicates whether or not someone has previously been infected with the virus but not if they are currently contagious. Boston, MA 02115 You may have seen something about your blood type impacting your risk of COVID-19. receive communications related to AARP volunteering. New studies suggest people with blood type O may have a lower risk of COVID-19 infection and reduced likelihood of severe outcomes, including organ complications, if they do get sick. The researchers found no significant connection between blood type and COVID-19–related hospitalization, intubation, or death. When these antigens come into contact with a pathogen or other unfamiliar substance, they trigger an immune system response. The research done on thousands of patients found that people with Type O blood seemed to have less severe cases of COVID-19 while people with Type A seemed more vulnerable to coronavirus. Get instant access to discounts, programs, services, and the information you need to benefit every area of your life. If antibodies are detected, it may also indicate immunity to Covid … Save 25% when you join AARP and enroll in Automatic Renewal for first year. As we said, no matter your blood type, you are not immune to COVID-19. What is emergency use authorization for COVID-19 vaccines and treatments, Trial data shows coronavirus vaccines are highly effective. Javascript must be enabled to use this site. No. >>>MORE: Gov. According to a new study, people with blood type A are more likely to test positive for the novel coronavirus. They found that 38% of the covid-19 patients had type A blood, compared with just 31% of the healthy people surveyed. You are leaving AARP.org and going to the website of our trusted provider. Conversely, 44.4% of those who tested positive for COVID-19 had type A blood, while only 42.4% of the Danish population has that blood type. Shutterstock. This, however, does not mean they can't contract the virus or fall seriously ill from it. Coronavirus vaccine: When will we have one? Maybe, but if there are factors in blood type that make people more vulnerable or less vulnerable to COVID-19, the effects might not raise or lower the risk by much. They also observed that individuals with type O blood had a slightly lower risk for getting severely ill or dying from COVID-19 if they did become infected. They found that people with Type A blood had a 50% greater risk of needing oxygen support or a ventilator if they were to contract COVID-19. Additionally, people with Rh-negative blood were found to have a lower probability of both infection … The new Covid-19 findings surely produced some relief in people who are type O and dread in those who are type A. Research Departments, Centers, Initiatives and more, Celebrating 50 Years of Diversity and Inclusion, Resources on Health Disparities and COVID-19. … Scientists racing to understand behavior, spread of mutating virus, What we learned about treating COVID-19 in Year One of the pandemic, On Match Day, 2021, MD students learned where they'll serve residencies, How SARS-CoV-2 mutations allow the virus to dodge immune defenses, This article is part of Harvard Medical School’s. Blood tests, or serology tests, involve taking a blood sample to reveal whether or not Covid-19 antibodies are present in the blood. For the most part, studies assessing COVID-19 severity and blood type focus on A, B, AB or O blood classifications. “There's a fairly decent amount of existing literature beyond SARS-CoV-2” that certain blood types can play a role in disease risk and severity, says Joel Ray, M.D., a clinician scientist and professor at St. Michael's Hospital in Toronto and lead author of the study published in Annals of Internal Medicine. Canadian researchers reached a similar finding in their retrospective study published in Annals of Internal Medicine. “Clotting is always a good thing if you cut yourself, but it's a bad thing, generally, if you get a really bad infection [because it] activates the clotting cascade and tends to activate clotting in small blood vessels,” he says. Which publications would you like to receive? Deaths among this population were 12 times as high. And certain blood types may be better at fighting off certain foreign invaders than others. Our Eye Center has answers to your vision health questions. Do some blood types mean a higher coronavirus risk? “We showed through a multi-institutional study that there is no reason to believe being a certain ABO blood type will lead to increased disease severity, which we defined as requiring intubation or leading to death,” said senior study author Anahita Dua, HMS assistant professor of surgery at Mass General. Other Studies Confirm the Connection. 25 Shattuck Street In Denmark, blood type O was associated with reduced risk of developing COVID-19 (RR 0.87, 95% CI 0.83-0.91), based on the proportion of those with type O blood … What's more, 95 percent of COVID-19 deaths in the U.S. have occurred in adults 50 and older. related to AARP volunteering. Individuals with O blood type are between 9-18% percent less likely than individuals with other blood types to have tested positive for COVID-19, according to … Most of the value in the research, Silverstein says, is to learn more about the new virus that has so far infected almost 68 million people worldwide, and how the body responds to it. And several other peer-reviewed studies reinforce these findings. Comments: 0. What can genetics reveal about the coronavirus pandemic? For the latest coronavirus news and advice go to AARP.org/coronavirus. The rise of COVID-19 in all corners of the world sent scientists scrambling to find characteristics that might render individuals more susceptible to the virus, as well as risk factors that might intensify its severity and progression. "If you're type A blood, you might be at a slightly higher risk than if you're type O. An intriguing finding from the study was that there appeared to be a greater chance of people with blood types B and AB who were Rh positive testing positive for the virus. People with type O blood tend to clot less that their peers, Ray says. … The researchers found that people with blood type O had a lower chance of severe COVID illness or death compared to people with other blood types. Recent evidence suggests blood type may affect risk of severe COVID-19. You must be logged in to leave a comment. For now, though, the researchers are confident that their principle finding—that ABO blood typing should not be considered prognostic in patients who acquire COVID-19—will help debunk the kinds of clinically unfounded rumors and misinformation that can readily gain traction in the midst of a pandemic, and in some cases become part of accepted medical practice. “They are at risk for COVID, just a little bit lower than type A.… That doesn't mean that [type] O is zero risk.”. Research has shown that people with type O blood are more likely to get seriously ill from cholera than others who come down with the illness; and type O blood has been shown to offer some protection against severe malaria. of medicine, biomedical research, medical education and policy related to the SARS-CoV-2 pandemic and the disease COVID-19. Please return to AARP.org to learn more about other benefits. These findings hold when adjusted for age, sex, body mass index, ethnicity, and co-morbidities. Despite the growing body of research suggesting some link between COVID-19 and blood type, experts say these studies don't change much for the individual. The first hint of a possible relationship came in March, from researchers in China, who compared nearly 2,200 hospitalized COVID-19 patients to a control group of approximately 27,000 healthy individuals. Once you confirm that subscription, you will regularly 617-432-1000, © 2021 by The President and Fellows of Harvard College, Olfactory support cells, not neurons, are vulnerable to novel coronavirus infection. There appeared to be little differences in susceptibility among the other blood types. Their findings, published in the Annals of Hematology, dispel previous reports that suggested a correlation between certain blood types and COVID-19. WEDNESDAY, March 3, 2021 (HealthDay News) -- A new study provides further evidence that people with certain blood types may be more likely to contract COVID-19. https://www.aarp.org/.../info-2020/blood-type-coronavirus.html This has resulted in numerous theories and reports about the association between COVID-19 and blood type, which have often led to more questions than answers. “We showed through a multi-institutional study that there is no reason to believe being a certain ABO blood type will lead to increased disease severity, which we defined as requiring intubation or leading to death,” said senior study author. The question of a possible relationship between blood type and disease risk has been a topic of active research since early in the pandemic. Recent data suggests that people with blood type A have a significantly higher risk of acquiring COVID-19 than non-A blood types. Less vigorously reviewed last year, research out of China that appeared to show a correlation between blood type and susceptibility to COVID-19, specifically, that those with Blood Type A, were more susceptible to COVID-19 infections than those with Blood Type O. … The findings come on the heels of continued research from the GenOMICC Consortium , an international association of scientists that study the connections between severe illnesses and genes . And a complication seen in many people with severe COVID-19 is blood clots in the small blood vessels of the lungs. , dispel previous reports that suggested a correlation between certain blood types and COVID-19. You will be asked to register or log in. The statistical analysis determined the independent effect of blood type on intubation and/or death of these infected patients. A June report from the Centers for Disease Control and Prevention (CDC) found that hospitalizations for people with COVID-19 were six times as high for patients with chronic health conditions like heart disease, lung disease and diabetes, compared to otherwise healthy individuals. Covid France: Can I pick vaccine type by choosing where I get it? “Inflammation is a particularly important finding because prevailing scientific thought is that COVID-19 wreaks havoc on the body through systemic inflammation, which can lead to morbidity and death,” Dua said. Read on to find out what blood type could protect you from the virus, and for more on how to tell you're already sick, check out This Surprising Body Part Can Determine If You Have COVID, Study Says. However, in other research, white blood cells' exact roles and subtypes in severe COVID-19 are still unclear. In the meantime, please feel free "Many studies have found associations between blood groups and propensity for SARS-CoV-2 infections," in particular, showing that people with type O blood … AARP is a nonprofit, nonpartisan organization that empowers people to choose how they live as they age. There are also several well-established connections between blood type and infectious diseases; for example, type O blood is protective against malaria but is associated with more severe cases of cholera. Blood type may also influence norovirus susceptibility. not associated with a severe worsening of symptoms in people who have Additionally, a November 2020 study published in the medical journal Nature also found that blood type influences COVID risk. One explanation: Your blood type is based on proteins, called antigens, that cover the surface of your red blood cells. How exactly does SARS-CoV-2 cause disease? COVID new strain symptoms: The novel coronavirus affects people in different ways with some requiring hospitalisation and the need for a ventilator. The large retrospective review showed no significant connection between blood type and worsening of the disease, between blood type and the need for hospitalization, positioning requirements for patients during intubation, or any inflammatory markers. And that the worst thing that can happen is that people let their guard down,” Silverstein says. Even stronger evidence was assembled by the team that symptomatic people with blood type O were less likely to test positive. by Rachel Nania, AARP, December 8, 2020 A person’s blood type might play an important role in contracting COVID-19 and the severity of infection. Individuals with O blood type are between 9-18% percent less likely than individuals with other blood types to have tested positive for COVID-19, according to the data. www.aarp.org/volunteer. But that doesn't mean you should be more careful; everybody needs to be more careful. Blood type is not associated with a severe worsening of symptoms in people who have tested positive for COVID-19, report Harvard Medical School researchers based at Massachusetts General Hospital. (CNN) People with blood type O may be less vulnerable to Covid-19 and have a reduced likelihood of getting severely ill, according to two studies … A recent study coauthored by Canadian Blood Services’ chief scientist, Dr. Dana Devine, shows that people with blood groups A or AB are more likely to have a severe COVID-19 infection than people with blood groups B or O. HMS researchers at Mass General launched their own investigation by drawing on the massive database of the Mass General Brigham Health system’s Research Patient Data Registry. You'll start receiving the latest news, benefits, events, and programs related to AARP's mission to empower people to choose how they live as they age. again. “This evidence should help put to rest previous reports of a possible association between blood type A and a higher risk for COVID-19 infection and mortality,” Dua said. Adapted from a Mass General news release. One Blood Type Is Linked To Severe COVID Infection The severity of COVID infection depends partly on blood type. Please enable Javascript in your browser and try Yet these risks are relative, meaning people with type O blood are not immune to COVID-19. Blood type and getting Covid-19 . Certain blood groups less likely to get COVID-19. So follow Dr. Anthony Fauci’s fundamentals and help end this pandemic, no matter where you live—wear a … And though researchers still don't know why or how blood type may interact with SARS-CoV-2, a better understanding could “lead to discovering new pathways or new targets for treatment,” he adds. Blood type O seems to have the lowest risk. A study population of 1,289 symptomatic adult patients, who tested positive for COVID-19 and had their blood group documented, was culled from more than 7,600 symptomatic patients across five Boston-area hospitals, including Mass General and Brigham and Women’s Hospital, treated from March 6 to April 16 of this year. "There is a precedent in biology for blood type influencing infection,” Silverstein says. The study did find, however, that symptomatic individuals with blood types B and AB who were Rh positive were more likely to test positive for COVID-19, while those with blood type O were less likely to test positive. “We found, however, that inflammation markers remained similar in infected patients regardless of their blood type.”. To stem the coronavirus crisis, Harvard Medical School scientists forge ahead on six key fronts. "I would never tell someone who is type O that they don't have to wear a mask, or they don't have to do social distancing, or they don't have to wash their hands frequently,” says Roy Silverstein, M.D., professor and chair of medicine at the Medical College of Wisconsin Division of Hematology and Oncology, who was not involved in the studies. Visit today. En español | In the last several months, a number of studies have drawn a connection between blood type and COVID-19 risk, and most have reached the same conclusion: People with type O blood, the most common kind, may have a slight advantage over their peers when it comes to risk for a coronavirus infection and hospitalization or death from COVID-19. Even still, experts caution that the accumulating evidence on this subject shouldn't influence everyday medical or public health decisions. “Recent evidence suggests blood type may affect risk of severe COVID-19,” it explained. Barnkob's paper isn't the only one to suggest a connection between blood type and less susceptibility to Covid-19. This article is part of Harvard Medical School’s continuing coverage of medicine, biomedical research, medical education and policy related to the SARS-CoV-2 pandemic and the disease COVID-19. The link between blood type and COVID-19 severity.
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