A Stanford Medicine study explored immune signals that may be involved in these uncommon cases. Researchers found differences in certain immune-related proteins that could contribute to stronger inflammation in a small group of people.
Laboratory and tissue studies suggested that blocking some of these immune signals may reduce inflammation. However, these findings are still early research and do not create a new treatment or change current medical guidance.
Scientists say the goal is to better understand rare side effects and improve future mRNA technologies. Anyone with chest pain, shortness of breath, or a fast heartbeat after vaccination should seek medical advice promptly.
