Rare side effect, possible breakthrough, years of questions—researchers investigating mRNA COVID-19 vaccines say they may have identified a biological mechanism that helps explain uncommon cases of myocarditis, offering new insight into a condition that has puzzled scientists since the vaccines were introduced, but,
The study points to specific immune signaling proteins that may trigger inflammation in rare circumstances, while also reinforcing that the overall risk remains very low and that COVID-19 infection itself carries a greater risk of myocarditis and other serious complications. What these findings could mean for future vaccine development is only beginning to emerge therefore,