Acute gastroenteritis primarily has two main causes. The first is infection by bacteria and toxins, with Salmonella and Vibrio parahaemolyticus being the most common infections, and staphylococcal toxins, especially from Staphylococcus aureus, being frequently seen. Viruses can also cause outbreaks, often occurring in groups or within families. Additionally, consuming contaminated meat from poultry, fish, or other livestock, as well as seafood like snails grown in the wild, can trigger the disease. Contaminated leftovers infected by Staphylococcus aureus can also induce illness. The second cause involves physical and chemical factors, such as eating cold foods, some antibiotics, or accidentally consuming strong acids, alkalis, or pesticides, all of which can lead to this disease.