Blood type may increase the chance of getting COVID-19 – National

Blood type can increase a person’s risk of having COVID-19 and major complications while being treated for the disease. which signal the investigations of Canadian and Danish scientists. In two polls released In Blood Advances magazine, they show how they analyzed the profile of people infected with the new coronavirus and found a lower number of people with type O blood in patients.

Experts also found a greater number of more serious complications in people with blood A and AB. For them, the results can help develop better approaches MDIC.

The role of the type Sanguneo The prediction of the risk and complications of Sars CoV-2 infection is still little known. Looking for answers, the researchers compared the health data of more than 473,000 Danes who tested positive for Covid-19 and more than 2 million people without the disease (control group). They found fewer people with blood type and larger numbers of people with types A, B and AB among those infected.

New analyzes have concluded that people in Group O have a 13% lower risk of being affected by Covid-19. On the other hand, Group A is 9% more likely to die illnessand AB 15%. The group B rate was not significant. The team found no significant difference in the infection rate between types A, B, and AB. “Among these three subtypes, none of them got rates rated very high, which indicates a higher risk than the others,” the article says.

The researchers explain that the distribution of blood types varies between ethnic subgroups. This led them to continue paying attention to the ethnicity of those analyzed during the study. “The prevalence of the blood group can vary essential in different ethnic groups and different countries. Denmark is a small country, but because of its ethnic diversity it is possible for us to conduct appropriate screening in order to have a solid basis for our analyzes, ”said a statement by Torben Barington, a researcher at the University of Southern Denmark and one of the authors of the study.

In another study, researchers from Canada found that blood types A and AB appear to be associated with an increased risk of complications caused by COVID-19. Scientists examined data from 95 patients – all of them taken to the hospital in Vancouver because of illness complications. Those belonging to both blood groups spent more time in the intensive care unit (ICU), needed more dilysees to treat kidney failure, and required more mechanical ventilation.

“We have observed this damage in the lungs and kidneys and want to investigate the effect of the blood group and Covid-19 on other vital organs in future studies.” These data are of particular importance as we continue Going through the pandemic (…) We need more weapons to increase the chances of recovery, “said Mypinder S. Sekhon, a researcher at the University of British Columbia and one of the authors, in a statement.

David Urbaez, infectologist at Laboratorio Exame in Brasilia, explains that it is normal to try to determine a possible influence of this type when a new disease appears Sanguneo. “Blood groups always have important effects in this regard, be it from a genetic point of view or in relation to the proteins present in the red blood cells. These factors can affect the virulence factor of an infection and its mortality. They are also a hallmark of humans and it is normal for them to correlate with the development of a disease, ”he explains.

The doctor advises that the results of the research need to be deepened. “All of this is an initial research front that is sure to continue. The data we’ve seen so far suggests this possible vulnerability in people in Group A, but we need to investigate further. We need to know why this is happening on a molecular level, what is the factor that can make this difference, ”he explains.
The infectologist also believes that new forms of treatment can emerge once the relationship between blood type and susceptibility to COVID-19 is demonstrated. “We already know some characteristics of patients who may experience more complications and this has already changed the way they are cared for. This may be information that supplements this other data and in the future we may perform other medical interventions such as medicine That helps to minimize this risk, ”he says.

“Word of the expert

More studies needed

“Information from this type of study has surfaced since the pandemic began, but the reasons why these differences occur are still speculative. For example, with regard to Groups A and AB, we know that these people have an enzyme that stabilizes some clotting factors. Their presence can cause complications associated with COVID-19 such as: B. thrombosis, occur more often.
It would be interesting to conduct larger studies with even greater numbers of analyzed and elsewhere in the world to better understand this data. Denmark is able to do this type of analysis because it has this culture of collecting medical data from the entire population and this is something very valuable. This broad and diverse database is ethnically indispensable for such studies. Eduardo Flvio Ribeiro, hematologist and hematology coordinator at the Oncology Center of the Santa Lcia Hospital in Braslia.

“Russians register second vaccine

Russia has registered the second coronavirus vaccine, a move that precedes the final phase of human clinical trials in the country. According to Tatiana Golikova, Russian Deputy Prime Minister for Health, the formula with the title EpiVacCorona has a “sufficiently high level of safety”. The next step consists in tests with 40,000 volunteers. As with the first vaccine, Sputnik V, the Russian government did not reveal details about the new formula, an attitude that has aroused skepticism in the scientific community. The announcement came at a time when the country is on the brink of a recurrence of the disease and a record number of people infected: 14,231 new cases within 24 hours.

COVID-19: Risk of Becoming Seasonal

COVID-19 can become a seasonal illness if most cases are concentrated in a specific time of year. What American scientists consider in an article published in the latest issue of the Proceedings of the National Academy of Sciences (PNAS). The researchers arrived completed Analysis of climate models and pandemic data. If a vaccine against Sars-CoV-2 does not appear for them and the isolation measures are weakened, infections should occur more frequently in the cold than in the heat, as is the case with the flu.

The scientists used data on the evolution of Covid-19 since its inception and information on climate variability that occurred over the same period. They create statistical models that can be used to predict the scenario in which COVID-19 can reach its maximum transmission potential worldwide throughout the year. “We also use data for projections climatic monthly averages of temperature and humidity from 2015 to 2019, based on the assumption that these last few years are best suited to predict a closer future, ”explain the authors of the study, first authored by Cory Merow, a researcher at the Department of Ecology at from the University of Connecticut in the United States.

Through the analyzes, the researchers observed that ultraviolet light is associated with a decrease in the rate of growth of infections compared to other factors analyzed. “Based on these connections with the climate, we forecast that COVID-19 will temporarily decrease in summer, when recovered in autumn and peak next winter (…). It is important to note that our projections refer to a possible growth rate without social distancing or other control measures, ”the report said.

The researchers also point out that there are still doubts about the possible seasonality of Sars-CoV-2 as factors other than climate such as social interventions can affect the transmission of the virus. “That is why the world must remain vigilant and intervene contnuas It will probably be necessary before a vaccine is available, ”they point out.

It remains from the historical CO2 emission in the

The social pressures caused by the pandemic led to a significant drop in CO2 emissions in the first half of the year – even more than the reductions that occurred during the 2008 financial crisis and World War II. THE Clculo was created by a group of international researchers and published yesterday in the UK journal Nature Communications. According to the authors, the reduced consequence of the effects of social containment, such as a reduction in traffic use, is the smaller.

The researchers performed analyzes based on data on electricity generation and road traffic in 416 cities in 56 countries, including Brazil. They made the number of flights and records of production and consumption. The calculations showed that CO2 emissions from transport decreased by 40% in the first half of 2020; those from power generation, 22%; and industry 17%. Housing-related emissions fell by 3% despite mass teleworking. Scientists attribute this decline to an unusually mild winter (northern hemisphere) that restricted use Heaters.

However, emissions returned to normal levels in July when most countries eased social isolation measures. “Although the reduction in human activities this fall without Precedentsthe long term answer cannot be this because it is not feasible. We need changes that result from the restructuring of our energy generation and consumption systems, ”defends Hans Joachim Schellnhuber, researcher at the Potsdam Institute for Climate Impact Research in Germany and co-author of the study.