Organisms that cause nausea, vomiting, and diarrhea usually enter the body through which portal of entry?

Cytokines are tiny protein hormones that normalize immune responses and facilitate cell-to-cell communication. The disproportionately high levels of cytokines released by T cells enter the bloodstream and increase the number of symptoms, including fever, biliousness, vomiting, diarrhea, and sometimes tremor. Superantigens which includes staphylococcal toxins that may lead to food poisoning and toxic shock syndrome.