Some viruses that cause gastroenteritis include:

- Rotavirus
- Norovirus
- Astrovirus

Viruses Causing Gastroenteritis

Some viral infections of the GI tract include:

- Gastroenteritis
- Hepatitis

University of Notre Dame

The digestive system, or gastrointestinal (GI) tract, helps the body digest and process food, starting with the mouth and ending at the anus. The digestive system is vulnerable to pathogenic attacks, hence GI diseases are quite common. Such diseases include those caused by infection or intoxication, the former often being caused by contaminated food and water.

Digestive System

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Some parts of the digestive system include:

- Mouth/Oral cavity
- Accessory Digestive Organs
- Pharynx
- Esophagus 
- Stomach
- Small Intestine
- Large Intestine
- Rectum 
- Anus

(Photo credits in References)

Anatomy of the Digestive System

Despite defenses against them, some microbes continue to inhabit the mouth which can lead to diseases and infections including:

- Dental Caries
- Peridontal Disease
- Oral Thrush
- Herpetic Gingivostomatitis
- Mumps

Microbial Infections of the Mouth and Oral Cavity

Common bacterial infections of the GI tract include:

- Staphylococcal Food Poisoning
- Shigellosis (Bacillary Dysentery)
- Salmonellosis
- Typhoid Fever
- *E. coli* Infections
- Cholera and Other Vibrios
- Campylobacter jejuni Gastroenteritis
- Peptic Ulcers
- Clostridium perfingens Gasteroenteritis
- Antibiotic-associated diarrhea
- Foodborne Illness Due to Bacillus cereus
- Foodborne Illness Due to Yersinia

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