Scientists have identified a rare syndrome linked to reactivation of Epstein-Barr virus and high levels of coronavirus protein in people who have received Covid-19 vaccines.
The study, published online, found that patients with the syndrome experienced fatigue, brain fog, tinnitus, and dizziness. Researchers also detected differences in immune cells and found higher plasma levels of the coronavirus spike protein in these individuals.
Epstein-Barr virus, which can cause mononucleosis, was reactivated in people with post-vaccination syndrome. The study suggests that the vaccine may have triggered an abnormal response, leading to prolonged inflammation in the body.
Experts note that more research is needed to understand the causes of this condition and its relationship to Covid-19 vaccines. However, the study’s findings warrant further investigation, highlighting the importance of continued exploration into this topic.
The researchers collected blood samples from 42 people with post-vaccination syndrome and 22 healthy individuals, revealing distinct biological changes in those with the syndrome. While the results are not conclusive on their own, they suggest that post-vaccination syndrome deserves more attention from scientists.
“A small number of people may experience unusual side effects after vaccination,” said Akiko Iwasaki, an immunologist at Yale University who led the study. “We need to understand what’s going on in these individuals and try to address it.”
Source: https://www.nytimes.com/2025/02/19/health/covid-post-vaccination-syndrome.html