For anyone who doubts the prevalence of long COVID, it isn’t hard to find the growing pile of credible research -
The University to Arizona study is recent, and while it wasn’t an age specific study they cite 67% of people having symptoms after 30 days - https://news.arizona.edu/story/many-mild-covid-19-infections...
Chest CTs are abnormal in 75% of asymptomatic(!) COVID diagnosed individuals - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7846889/
This is a year old, but for 18-34 year olds it cites 1 in 5 hadn’t returned to their usual state of health 2-3 weeks out… https://www.cdc.gov/mmwr/volumes/69/wr/mm6930e1.htm?s_cid=mm...