
Prior COVID infection may weaken T cells, but vaccination still enhances defense.


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Researchers find reduced functionality for CD8+ T Cells in people who got infected before they got vaccinated. But CD4+ T cells, perhaps more important in protection, were boosted by vaccination.

COVID Infection Before Vax May Weaken Some T Cells: Study

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Impact of Prior COVID Infection on T Cells Post-Vaccination


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Some individuals do not get infected with COVID-19 due to their immune response recognizing hidden virus proteins, leading to a rapid and abortive infection. Understanding this unique immune reaction could pave the way for more effective vaccines in the future.


Wer trotz Kontakt mit Sars-CoV-2 kein COVID-19 bekommt, könnte durch besondere T-Zellen geschützt sein. Diese unterbinden die Infektion sehr früh.​

COVID-19: Weshalb manche Menschen gar nicht am Coronavirus erkranken

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Why Some People Don't Get Infected with COVID-19
