Changing World: Vectors, Climate and Society

Area of Science:

• Ecology
• Epidemiology
• Public Health

Background:

• Climate change poses a significant threat to public health by altering the dynamics of vector-borne diseases (VBDs).
• Understanding the complex interactions between environmental factors, vectors, hosts, and pathogens is crucial for effective disease control.
• Existing research often focuses on long-term impacts and overlooks immediate public health needs.

Purpose of the Study:

• To critically review the impact of climate change on VBDs, using Chagas disease (Triatominae) and leishmaniasis (Phlebotominae) as case studies.
• To analyze the limitations of current predictive models and assumptions regarding vector and pathogen adaptability.
• To propose a strategy for short-term, localized preventive monitoring of VBDs.

Main Methods:

• Critical literature review focusing on eco-epidemiological studies of VBDs.
• Analysis of VBD systems (Chagas, leishmaniasis) considering vector diversity, reservoirs, and transmission settings.
• Evaluation of research methodologies, model assumptions, and consistency of findings.

Main Results:

• Climate change impacts VBD transmission through complex, non-linear mechanisms.
• Vectors and pathogens exhibit adaptability, challenging static biological assumptions (Stockholm paradigm).
• Most studies emphasize long-term impacts and emission reductions, with limited focus on immediate, local interventions.

Conclusions:

• A shift towards multilevel eco-epidemiological perspectives is needed to understand VBDs.
• Short-term, localized preventive monitoring strategies are essential for timely public health decision-making.
• Recommendations are proposed for developing transferable VBD monitoring programs aligned with current public health needs.