Scientists May Have Found a Clue Behind a Rare Vaccine Side Effect

For years, one question kept surfacing whenever rare heart inflammation cases appeared after COVID-19 vaccination. Now, researchers believe they may have uncovered a hidden biological process that could finally explain why a small number of people—especially younger males—experienced this unexpected reaction, therefore,

The discovery points to specific immune signals that may trigger inflammation under certain conditions, but scientists say the story is far from complete. What happened when they blocked those signals in experiments raised even more questions about future treatments and what researchers might uncover next, but,