Public Health
publicado em 11/11/2011 às 11h50:00
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Doctors charge more effectively to test for HIV and Hepatitis C is implanted within SUS

NAT detects virus particles in the blood instead of the antibody designed to attack it, reducing the risk of false-negative result

 
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Although the blood used in transfusions in Brazil is considered safe, doctors warn of the need to accelerate the implementation of Nucleic Acid Testing (NAT) in public health. The test detects the presence of HIV and Hepatitis C before the body has created antibodies to these viruses, which prevent the transmission of diseases in transfusions.

The warning came in the Brazilian Congress of Hematology and Hemotherapy - Hemo 2011, which began on Thursday (10) and runs until Sunday (13), the state capital.

With NAT, which is looking for donated blood are viral particles that can be detected long before the antibodies appear. Currently, we are looking for blood to be donated and transfused to the patient are the antibodies that the body directed against these viruses with which the donor may have been infected before donation. The formation of these antibodies take a few days, weeks or even months. So, if I use a blood demonstrates the absence of antibody, the blood may already contain virus particles, but the test is negative because the antibody was not formed, explained the president of Congress, José Orlando Bordim.

According Bordim, the test is expensive and is being implemented in Brazilian blood banks. NAT, the doctor said, can bring a safety index of almost 100% for transfusions. We're almost there, the world is almost there. But neither the United States and in Europe the blood is free of any level of risk. There is a residual risk are those situations where, doing all the tests available today, still can not detect an infection, he said.

Source: Isaude.net
   Palavras-chave:   Blood transfusion    Blood test    Safety    Nucleic Acid Test    NAT    HIV    Hepatitis C antibodies    Deployment    SUS   
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