I pose this question to our rec.boats medical staff: :-)

I've heard and read that the coronavirus itself is *not* what causes
illness, particularly pneumonia. Rather, it is your immune system going
into overdrive trying to fight off the virus invasion to your system,
resulting in fever, congestion in lungs, resultant shortness of breath etc.

If this is true ... why are older people with *weakened* immune systems
more susceptible to becoming seriously ill if the immune system is
really causing the symptoms to manifest themselves?

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