Vibriosis

Vibriosis, also referred to as vibrio infection, is an infectious disease of humans caused by bacteria belonging to the genus Vibrio. The condition encompasses illness caused by approximately a dozen Vibrio species, though three species predominate in reported cases across multiple countries in the Northern Hemisphere: Vibrio parahaemolyticus, Vibrio vulnificus, and Vibrio alginolyticus. It is important to distinguish vibriosis from cholera, which is caused specifically by toxigenic strains of Vibrio cholerae O1 or O139 and is classified separately by the World Health Organization as a distinct, more severe disease entity. Non-toxigenic strains of Vibrio cholerae (non-O1 and non-O139) are included within the scope of vibriosis.

The clinical manifestations of vibriosis vary depending on the specific Vibrio species responsible for the infection, with symptom profiles differing among the various causative agents. Source-backed clinical detail regarding specific symptoms, disease severity, clinical course, and complications is not yet available from the provided source material. The available documentation indicates that the disease can present differently based on the etiologic species involved, suggesting heterogeneity in clinical presentation across the spectrum of Vibrio infections.

Vibriosis demonstrates a distinct epidemiological pattern strongly linked to environmental conditions, particularly water temperature and salinity levels that favor Vibrio bacterial proliferation. The bacteria thrive in warm, brackish waters and are commonly detected in shellfish populations including oysters, clams, and mussels, representing potential exposure sources for human infection. Climate change and rising global temperatures have been associated with increased prevalence of vibriosis, as warmer conditions expand the geographic range and seasonal duration favorable to Vibrio species. The disease exhibits seasonal concentration during warmer months when recreational water activities increase, leading to regional designations such as "bath-sore fever" or "bathing fever" in areas where the condition is endemic. Vibriosis also affects animal populations, causing disease in both wild and farmed fish, indicating a broader ecological impact beyond human health.

Vibriosis can be contracted through exposure to environments where Vibrio bacteria are present, though the specific transmission routes are not fully detailed in the available source material. The bacteria are naturally occurring in warm, brackish aquatic environments and accumulate in filter-feeding shellfish, representing a primary exposure pathway. The association with warm water activities during warmer months indicates that both direct water exposure and consumption of contaminated seafood serve as significant transmission routes for human infection.

Source-backed detail regarding specific high-risk populations for severe vibriosis is not yet available from the provided source material. The broad exposure pathways through water contact and shellfish consumption suggest that individuals engaging in warm-water recreational activities or consuming raw or undercooked shellfish from endemic areas may face elevated exposure risk. The documented impact of vibriosis on both human and animal populations indicates a One Health dimension to risk assessment that encompasses environmental, animal, and human health interfaces.

Public health measures for vibrios prevention center on avoiding exposure to potentially contaminated environments and food sources during periods of elevated risk. Source-backed detail regarding specific prevention strategies, including food safety protocols, water exposure guidelines, or population-level interventions, is not yet available from the provided documentation. The seasonal nature of infections suggests that timing of water-related activities and awareness of environmental conditions may represent important preventive considerations.

Vibriosis surveillance should account for the strong environmental drivers of disease incidence, particularly the correlation between warmer water temperatures and increased case detection. The condition's association with recreational water activities and shellfish consumption means that surveillance systems may benefit from integration with environmental monitoring programs tracking water temperature, salinity, and Vibrio presence in coastal and estuarine waters. The seasonal peak during warmer months and the emerging impact of climate change on geographic range expansion should inform seasonal preparedness and public health messaging. Source-backed detail regarding specific surveillance methodologies, case definitions, or reporting requirements is not yet available.

1. 1 Wikidata. vibrio infectious disease.
2. 2 Wikipedia. Vibriosis - Wikipedia.

ICD-10

ICD-11

Total cases

3K

Peak month

2025-08

Coverage

2 reporting countries · 2000-01-01 → 2026-05-09