For a majority of people, the COVID vaccine doesn’t cause adverse health effects — but a small percentage experience chronic symptoms that can last for months or even years. Yale researchers recently made some discoveries about why certain people experience this condition, which they have dubbed "post-vaccination syndrome" (PVS).In early findings, the team recognized "potential immunological patterns" that are unique to people with PVS. The hope is that this discovery will help to enable future treatments and therapies for those who are affected.IS MMR VACCINE SAFE FOR KIDS? DR. NICOLE SAPHIER ADDRESSES CONCERNS AS MEASLES CASES RISE"This work is still in