or other health effects occurring after acute infection, termedpostacute sequelae of SARS-
CoV-2 infection (PASC), also known aslong COVID. Characterizing PASC requires analysis
of prospectively and uniformly collected data from diverse uninfected and infected
individuals. Objective To develop a definition of PASC using self-reported symptoms and
describe PASC frequencies across cohorts, vaccination status, and number of infections …