Here is a good chart. Most are not within a few hours, there are some though that can happen fast though. When I got the campylobacteriosis we were on vacation in SD. We didn't find out what is was until later when my son still had it and we took him to the doctor. After that both states health departments wanted to know everywhere we ate for the previous 2 weeks.
"Other than the growing majority of gay stoner libtard hoplophobes in the metro area, it’s not really that bad here."
- The Chuckster's View of Colorado in 2015