Food question: fully cooked sausage?

Walawala

My first appointment is next week so I haven't got a change to talk to my doctor. I'm going for a road trip this weekend and was wondering if it's okay for me to eat fully cooked sausage, prewashed and ready to eat veggie directly? How about store bought pepperoni and salami?

I read somewhere said even if the sausage is fully cooked, you still need to reheat it to steam hot to eat. Is that true?

Thank you all!