For most of us, COVID-19 is a thing of the past, but for others, COVID has stayed with them long-term, four years after the onset of the pandemic.

Doctors at Providence Swedish in Seattle want to hear from those "long COVID" patients.

"Long COVID prevalence has been studied so that the number of Americans with long COVID is estimated to be somewhere between 20 and 40 million people," said Dr. Jason Goldman, an infectious disease physician and primary investigator at Providence Swedish.

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