What do the results say? The researchers tracked63 individuals who have recovered from COVID-19 for 12 months. Of those 26 had also received at least one dose of an mRNA vaccine (Moderna or Pfizer-BioNTech). Their immune responses were monitored over time, and vaccinated individuals showed 30-fold higher levels of antibody count compared to unvaccinated individuals. Vaccinated people also had higher neutralizing activity (NT50) of 3,684 compared to 75 in unvaccinated individuals, showing a 50-fold increase!
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