In histories of the period before modern medicine, people were often “sickly” in some fashion or another.
That’s been much less true the past hundred years or so. With a few exceptions (terrible accidents, horrific war injuries), if whatever you had didn’t kill you, you probably got entirely better.
Since I first heard of Long Covid, I’ve been expecting a return to the historical norm.
Looks like I was right:
A total of 17.6% of American adults have ever experienced long Covid symptoms, the survey found.
Source: The Guardian