The study tapped into a massive database of health records at the Department of Veterans Affairs, which has data from patients at 1,255 health care facilities across the US. The authors, led by clinical epidemiologists Yan Xie and Ziyad Al-Aly, focused on 153,760 veterans who tested positive for COVID-19 between March 1, 2020 and January 15, 2021 and survived at least 30 days afterward. They then assembled a comparison group of 5.6 million veterans from the same period who did not test positive and a historical comparison group that included health records from 2017 from an additional 5.9 million veterans… More here.
There seems to be a few concerns now around the heart and brain when it comes to long Covid symptoms. I guess that only time will give is the full story.