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Everything we know about Covid-19 antibody testing (so far)

 


Is SARS-CoV-2 evolving rapidly? How long does the SARS-CoV-2 antibody last in the body? No one knows yet, but some researchers hope to find the virus similar to its genetic cousin, the original SARS virus. Exposure to those awarded 2 or 3 years of immunity. Regarding SARS-CoV-2, Mercy said: Another infection, but not proven yet. “

The issue of how long an immunoassay lasts has pushed widespread deployment of antibody testing, creating uncertainty and pessimism. If a single attack on the SARS-CoV-2 virus confers long-term immunity, the more people become immune, the lower the infection rate will be. After all, we reach “herd immunity.” This is the point at which so many people have antibodies that essentially stop the transmission.

But if a wide range of societies have antibodies, but the immunity they give off disappears relatively quickly, it will make little sense in the long run. Those who survive with Covid-19 will soon be vulnerable to catching it again.

Some health professionals believe that SARS-CoV-2 will be with them for years to come, and may even persist throughout the year as people with asymptomatic or mild symptoms continue to spread it. . May Seasonal flare again, Like the flu or cold. If so, it will continue Until the vaccine is developed.

Is the antibody test reliable?

This question is difficult to answer because there are so many new tests that are in the market and under development. The number of tests available is constantly changing. There is At least 120 Commercial tests already available, including those by Cellex. We have received some urgent approval from the FDA and skipped some red tape requirements for faster use. Developed by Mayo Clinic Own in-house testing. The Center for Disease Control and Prevention is also in development, but I won’t talk much about it.

Covid-19 is so new that none of these new tests have a long history of proving how accurate they are. The test may indicate a false negative (misleading antibody but mistaken) if the antibody is too low to be detected by the test. Also, if you mistake the SARS-CoV-2 antibody for anything else, false positives can occur. New York Times A team of more than 50 scientists tested commercial kits on the market by the end of April, reporting that only 3 out of 14 tested were tested. Consistently reliableHowever, the study has not been peer-reviewed. Monday, FDA tightens approval guidelinesConcerns about defective results and some companies are falsely marketing the test as “FDA-approved.”

“While the system is improving, there are a lot of tests out there, and there are some concerns that some really aren’t detecting the Covid-19 antigen,” Mercy says. “That is, because they belong to the coronavirus family, they may be testing other coronaviruses and falsely indicate it is Covid-19.”

Early efforts in mass antibody testing have not yet been clarified. For example, the last two Study in California posed questions Researchers’ methods and the accuracy of the test equipment they used

Should you get it?

Marcy says he may do so as well, with the caveat that salt granules may need to deliver results. “From a public standpoint, we certainly need to test as many people as possible. The intent is to make it available to anyone who wants it,” says Mercy.

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