Infectious Diarrhea

Infectious diarrhea, classified under ICD-10 code A09 and ICD-11 code 1A11, is defined as a medical condition characterized by inflammation of the stomach and/or small intestine. The disease falls within the broader category of bacterial enteric infections and is specifically designated as 'other infectious diarrhea' in clinical classification systems. This condition represents an inflammatory process affecting the gastrointestinal tract, distinct from non-inflammatory causes of diarrhea.

The clinical syndrome of infectious diarrhea encompasses a characteristic triad of symptoms including diarrhea, vomiting, and abdominal pain. Additional systemic manifestations frequently observed include fever, lack of energy, and dehydration. The illness course is typically acute and self-limiting, with most cases resolving within a period of less than two weeks. The severity spectrum ranges from mild, self-limited episodes to potentially serious dehydrating illness requiring medical attention.

Source-backed detail regarding the geographic distribution, outbreak patterns, and population burden of infectious diarrhea is not yet available from the provided source material. Similarly, information concerning specific reservoirs, environmental exposure ecology, and surveillance methodologies employed for this condition cannot be detailed from the current evidence base. The disease classification as 'other infectious diarrhea' suggests inclusion within broader enteric infection surveillance frameworks.

Source-backed detail regarding the specific routes of transmission, exposure pathways, or infectious dose characteristics for infectious diarrhea is not yet available from the provided source material. The inflammatory nature of the condition indicates an infectious etiology, but the precise mechanisms of pathogen acquisition and spread cannot be characterized from the current evidence base.

Source-backed detail regarding specific high-risk populations for severe infectious diarrhea outcomes is not yet available from the provided source material. While dehydration represents a recognized complication that would typically elevate risk for young children, elderly individuals, and immunocompromised persons, the source material does not provide explicit characterization of risk groups for this condition.

Source-backed detail regarding specific public health prevention measures, exposure control strategies, or population-level interventions for infectious diarrhea is not yet available from the provided source material. General principles of enteric infection prevention would typically include hygiene promotion and food safety measures, though these cannot be specifically attributed to this condition without supporting evidence.

Infectious diarrhea surveillance data should be interpreted with awareness that the condition is defined by inflammatory involvement of the stomach and/or intestine rather than by a specific etiologic agent. The 'other infectious diarrhea' classification captures cases not otherwise specified within more defined enteric infection categories. The colloquial use of 'stomach flu' in North American contexts may influence clinical coding practices and should be considered when interpreting surveillance trends.

1. 1 Wikidata. gastroenteritis.
2. 2 Wikipedia. Gastroenteritis.

ICD-10

A09

ICD-11

1A11

Total cases

30.3M

Total deaths

320

Peak month

2025-03

Coverage

3 reporting countries · 2000-01-01 → 2026-05-02