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    Bacteria are present in the food. The food that involve in the transmission of bacteria are raw or undercooked meat, poultry, eggs or egg products. Bacteria enter into the stomach and then go into the intestine. Salmonella is intracellular pathogen. In intestine, it adheres to enterocyte and invades in the cell. Bacteria increase the adenylate cyclase activity. This increases the cAMP level of the intestine that leads to diarrhea. The inflammation of intestine starts when cell lysis occurs. This inflammation is called gastroenteritis. In intestine, The incubation period ranges from several hours to two days. After incubation period, the symptoms include are

    • Nausea
    • Vomiting
    • Abdominal cramps
    • Diarrhea
    • Blood in the stool

    From intestine, it adheres to the blood vessel and causes bacteremia. Bacteria affect many organ when it enter the blood.

    • Fever
    • Chills
    • Headache

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