"Just why, was not "Asclepius" not the god of the Greeks and Romans / Rum, etc.? "
Ron, because: the Greeks and Roman's were barbatians who for the most part did not believe or even understand ritual cleanliness and hygene.
The truth: Asclepius was the god of a minority of Greeks and Romans! And the truth isn't a whole lot different today although things have improved some. That I grant you.
Lat's hear it for Imhotep, god of medicine and science! Hip Hip Hurrah!
© Charles N. Pope, US Library of Congress. All rights reserved.