4. Temperature
Again, most of the symptoms of food poisoning are actually caused by the body itself trying to get rid of the bacteria or the virus – which is actually what cause a lot of symptoms in a lot of illnesses.
This is the function of a temperature which causes the body to get hotter in response to a foreign invasion. This means that a fever itself is not actually anything to worry about but rather a natural reaction of the body to bacteria. That said, it does become a worry if it goes over 103F (39.4C), or if it lasts for more than seven days.
Fevers can eventually also cause dehydration and damage to the brain and other areas of the body, so don’t allow it to go on indefinitely.