Quote Originally Posted by smn5746 View Post
Pretty sure this is Long Covid in the Unvaccinated not vaccinated
You are right. The paper studies "long COVID" over a 7 month period and it says:
Data were collected from September 6, 2020 to November 25, 2020.

That means they study COVID patients that were infected between February 2020 - April 2020.

The first vaccines to enter phase 3 trials only did so in November 2020.