>>Finally, the surefire way to prevent long-Covid is not to catch Covid-19 in the first place.

One of my favorite fortune-cookies out of the old Unix 'fortune' program: "In an accident, presence of mind is good - but absence of body is better."

seems like it might apply here. :-)

Also, I find the increased prevalence in females (better immune systems) and older people (worse immune systems) interesting.