I think that for a while we've been going through a phase where the term Long Covid has been developing a mixed usefulness.
In theory the term is used to refer to any health condition caused by a covid infection that you have three months after the infection, and that lasts for at least two.
Honestly, I think if that's your definition, then the majority of over 40s in our local community *have had* long covid.
I've seen a couple of recent takes saying that people who consider covid to still be a problem are essentially antivax, because they don't trust the vaccine to deal with the problem.
That's obviously nuts, but let me just break it down into words one syllable:
Jabs don't stop long sars.
I couldn't say long covid because that's two syllables.
"This could be due to long-haulers’ inability to mount an appropriate, timely immune response to clear the COVID-19 infection each time, leading to greater susceptibility to developing PASC in subsequent infections."