Why We Can’t Rely On Natural Immunity To Protect Us From Covid-19

There is a question that has crossed all our minds at some point, yet has no satisfactory answer: If I’m infected with SARS-CoV-2, the virus that causes Covid-19, how long am I immune? A more technical way of asking the same question is: How long do anti-SARS-CoV-2 antibodies that bind to the spike protein persist?

While a new study on anti-SARS-CoV-2 antibodies, published yesterday in JAMA, hasn’t much to offer in the way of definitive answers, it does provide some disturbing insight into our natural immunity—or lack thereof—to Covid-19. Compounded with recent reports of reinfection, this study and others like it give us much to think about when it comes to how we move forward in our pandemic response.

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(Originally published September 18, 2020 on Forbes)

© William A. Haseltine, PhD. All Rights Reserved.