Two Yale University researchers want to understand why symptoms that emerge rarely after COVID-19 vaccines occur.
Persistent symptoms after vaccination — sometimes called “long vax” — are similar to those reported with long COVID, including small-fiber neuropathy and postural orthostatic tachycardia syndrome (POTS ). But studies have largely shown that the risk of post-vaccine events do not exceed background rates, or that the odds of a new diagnosis like POTS are greater after SARS-CoV-2 infection than after vaccination.
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