A foodborne infection occurs when
1
the microorganism itself is ingested with the food and the person already has a cold or some other virus
2
the microorganism itself is ingested with the food, establishes itself in the host’s body, and multiplies to significant enough numbers to cause illness.
3
the microorganism itself is ingested with the food, and produces a toxin, either in the food or in the host’s body. The toxin causes illness the microorganism itself is ingested with the food, and produces a toxin, either in the food or in the host’s body. The toxin causes illness
4
raw animal products come into contact with a food handlers open sore or lesion