A00-A09: Intestinal infectious diseases

A08: Viral and other specified intestinal infections

Viral and other specified intestinal infections are a group of conditions that mainly involve a disruption to the normal function of the digestive tract due to infection by a virus or other pathogens. Common culprits include rotavirus, norovirus, and certain strains of adenovirus. Infection often occurs through ingestion of contaminated food or water, or through contact with an infected person. Initial signs typically include abdominal cramps, diarrhea, and vomiting. Prolonged disease may lead to dehydration and weight loss. While these illnesses can affect anyone, young children, the elderly, and individuals with weakened immune systems are particularly vulnerable. The course of illness often varies – some infections clear up within a few days, while others may persist for multiple weeks. Despite the diverse array of conditions within this classification, they all notably involve the gastrointestinal system and share a common mode of transmission.