![]() ![]() Second, in case the mother has Rh- blood group and the father has Rh+ blood group, according to the laws of inheritance, at least 50% of children born with the same blood group as their father are Rh+. People with the rare Rh- blood group are at higher risk than people with other blood types for the following reasons: First, when they need a blood transfusion (eg due to an accident causing blood loss acute surgery) help.) then this rare blood type is not always available in medical facilities or hospitals. Is there any problem when you have a rare blood type? According to the Red Cross, Asian Americans are more likely to have blood type B positive than Latinos and whites. In addition, different variations coexist among different groups of people in the United States. For example, in India, the most common blood type is B positive, while in Denmark it is A positive. Different populations have different proportions of blood types. The Stanford Medical School Blood Center ranks rare blood types in the United States from rarest to most common as follows: AB negative (0.6 percent) B negative (1.5 percent) AB positive positive (3.4 percent) A negative (6.3 percent) O negative (6.6 percent) B positive (8.5 percent) A positive (35.7 percent) O positive (37.4 percent). In the United States, AB negative blood type is the rarest blood group and O positive blood type is the most common. Therefore, people with Rh- blood group in our country belong to the community of people with rare blood type (4-7 people in 10,000 have Rh- blood type). According to the International Association of Blood Transfusion, blood group with a prevalence of less than 0.1% in the community is called a rare blood group and less than 0.01% is called a very rare blood group. In Vietnam, up to 99.96% of people belong to Rh+ blood group (or O+ or B+ or A+ or AB+, in descending order) but only 0.04%-0.07% of people belong to blood group Rh- (or O- or B- or A- or AB-) blood. Together these two systems form the eight basic blood types that most people are familiar with: Blood group A positive Blood group A negative Blood group B positive Blood group B negative Blood group AB positive Blood group AB negative Blood group O positive Blood group O negative. These are the ABO and Rh-positive/Rh-negative blood group systems. While there are at least 33 blood grouping systems, in clinical practice only two are widely used. Your blood also contains antigens, which are proteins and sugars located on the surface of red blood cells, and this is how scientists classify each person's blood type. But that's not all components of the blood. ![]() Each drop of blood contains red blood cells, which carry oxygen throughout your body In addition, blood also contains white blood cells that help the body fight infections and platelets that play an important role in blood clotting. Knowing blood type information is very important in emergency work for patients, especially those with rare blood types. If a person receives blood that contains antigens that do not match the blood type of the donor, the recipient's immune system will try to attack the foreign blood cells, which can lead to death. Our blood contains antigens that cover the surface of red blood cells and these antigens are important for determining blood type for the purpose of donating or receiving blood.
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