<img height="1" width="1" alt="" style="display:none" src="https://www.facebook.com/tr?ev=6048136207047&amp;cd[value]=0.01&amp;cd[currency]=USD&amp;noscript=1"> Are you better protected against Covid-19 if you have built up antibodies in your blood?

Are you better protected against Covid-19 if you have built up antibodies in your blood?

Question from Hans: Is there any more medical research available that shows that you are better protected against Covid-19 if you have antibodies built up in your blood?

A: We have clear studies here that claim this, because deliberately re-infecting people would be unethical.
In animal studies, this has been demonstrated.

There are still no known cases of people who were really infected by an external source for a second time after having antibodies.

https://info.bloodtesting.nl/coronavirus-testen/toelichting-uitslag-corona-covid-19-laboratoriumtest-op-antistoffen/

https://info.bloodtesting.nl/kun-je-voor-een-tweede-keer-corona-krijgen/

There are still no known cases of people where the antibodies have disappeared (6 months now).
However, we do not know how long these will remain.
In sars-cov-1, this was 3 to 5 years.
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