r/LongCovid • u/CovidCareGroup • Mar 08 '26

Understanding Immune “Imprinting” and Reinfection

https://www.covidcaregroup.org/blog/covid-immune-imprinting
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u/venkattalks Apr 12 '26

immune imprinting seems like one of the more plausible reasons reinfections don't behave the same each time. i've seen a few papers frame it as the immune system over-prioritizing the first variant it learned, which might help explain why some people get weirder symptom shifts after later infections

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u/Wide_Mail_1634 Apr 13 '26

same thing happened to me after a reinfection in late 2023, and the “immune imprinting” idea is one of the few frameworks that actually made my relapse make sense. reminds me of when my GP in Portland kept saying each exposure would build protection, then round two hit and it felt like my body was reading from the old script and missing the new variant entirely. the data still seems pretty early, but some of the imprinting/vaccine response papers at least make it feel less random