Climate change and Vibrio: Environmental determinants for predictive risk assessment

Area of Science:

• Environmental microbiology
• Climate change impacts
• Infectious disease epidemiology

Background:

• Climate change alters microbial ecosystems, expanding pathogen ranges and increasing infectious disease emergence.
• Waterborne diseases are a significant threat, particularly in vulnerable regions with poor sanitation.
• Pathogenic microorganisms are integral to environmental cycles, making eradication impossible.

Purpose of the Study:

• To analyze historical data (since the 1960s) to identify environmental drivers of pathogenic Vibrio spp. occurrence and distribution.
• To enable predictive modeling of climate change effects on cholera and non-cholera vibriosis.
• To explore the potential for modifying existing models to predict diseases caused by all clinically relevant Vibrio spp. and other waterborne pathogens.

Main Methods:

• Analysis of historical studies focusing on environmental determinants of Vibrio spp.
• Integration of microbiological, sociological, and weather data for predictive modeling.
• Review of existing predictive risk models for Vibrio cholerae.

Main Results:

• Climate change is linked to increased Vibrio spp. proliferation in aquatic environments.
• This proliferation correlates with heightened environmental transmission of diseases like cholera and non-cholera vibriosis in specific global regions.
• Predictive models for Vibrio cholerae have successfully reduced case fatality rates when implemented early in outbreaks.

Conclusions:

• Environmental determinants of Vibrio spp. can be identified to predict disease outbreaks.
• Predictive models, adapted from Vibrio cholerae models, hold potential for forecasting diseases caused by various Vibrio spp. and other waterborne pathogens.
• Anticipatory decision-making through predictive intelligence models can reduce infection risks associated with climate change and waterborne pathogens.