Most people who ended up with long COVID started with a mild case, new study shows
www.cbsnews.com
The researchers found "a staggering" 90% of people living with long COVID only had a mild illness to start — but people who were hospitalized were more likely to develop the lasting symptoms.

However, because the vast majority of COVID-19 cases do not require hospitalization, many more cases of long COVID have arisen from these milder cases despite their lower risk.