Ridderkerks Dagblad | Six months after corona, 90 percent still have antibodies


The vast majority (90 percent) of the people who have been infected with the coronavirus still had antibodies against the virus in their blood six months later. In addition, the antibodies become stronger over time, so that less of them are needed to do the same job. Researchers at the National Institute for Public Health and the Environment (RIVM) draw these conclusions based on a large ongoing study into immunity to the virus.

Antibodies form the body’s natural defense against viral infections. They ensure that the body recognizes the virus as an intruder and can clean it up.

With Sars-CoV-2, it is not yet entirely clear to what extent people who have ever been infected with the virus will be protected against it afterwards, and for how long. Many examples of people who have become infected for a second time have already been described.

“In general, the more antibodies there are in the blood, the better the body is protected against a virus,” explains RIVM.

Every few months, the RIVM uses a sample of thousands of people to examine how many of them have antibodies against corona in their blood. In the last round, in September and October, about 6,500 blood samples were examined. 4.9 percent of the participants had antibodies against Sars-CoV-2 in their blood. “This blood has largely been drawn before the peak of the second wave,” the institute writes. In the meantime, the percentage is probably considerably higher.

Of all age groups, young adults (20-30 years old) most often have antibodies in their blood: about 10 percent.



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