A vaccine has inactive cells.
There is live cells for some shots or methods.
A vaccine refers to a method with inactive cells because they are weaker.
A dead body is weak and cannot harm you.. but it can still infect you. As it decomposes.
https://youtu.be/T6gMEdOicTcDoctor states an inactive vaccine cannot get you sick.
But then says people complain of soreness. Which yeah maybe in their head.
But then states people reporting "low grade fever" it go away in a couple of days. But the flu might only last a couple of days.
100.4 is the lowest a fever can be. Most parents don't recognize anything under 101 as a fever.
Even people who get the flu not all of them have runny noses or death coughs. Some people who get the flu without a vaccine. Only run a fever.
So what constitute as the flu then?