G.R. Patterson III wrote:
According to my microbiology professor years ago, "24 hour bugs" are invariably
some form of food poisoning.

Your microbiology professor was wrong (I'd give you a reference, but
that would be getting even more off topic for r.a.p!). However 48 hours
is more typical for viral gastroenteritis. Many times, though, a
majority of the symptoms are improved after shorter periods.

--
David Rind