The impact of climate change on travel-related vector-borne diseases: A case study on dengue virus transmission

Abstract

Introduction

Climate change significantly affects global health, particularly through the increased transmission of vector-borne diseases like dengue fever. This study examines how climate change influences the geographical spread of Aedes aegypti mosquitoes, the main carriers of dengue, highlighting its implications for public health worldwide.

Materials and methods

This study employed a comprehensive approach to evaluate the effect of climate change on dengue transmission dynamics. It included environmental data analysis, mosquito population surveys, and dengue case reports. Remote sensing data was used to track changes in temperature, precipitation, and humidity in dengue-prone areas. Field surveys measured mosquito density, while molecular techniques assessed viral load in Aedes mosquitoes. Additionally, mathematical modeling predicted dengue's future spread under various climate scenarios.

Results

The findings indicate a significant correlation between rising temperatures, changing rainfall patterns, and the expansion of Aedes aegypti habitats, resulting in increased mosquito populations in previously non-endemic areas. This ecological shift is linked to a rise in dengue incidence in regions affected by climate change. Projections suggest a 25 % increase in dengue spread by 2050, especially in Southeast Asia, sub-Saharan Africa, and parts of South America.

Discussion

The study highlights the significant effects of climate change on mosquito distribution and the increasing rates of dengue fever. Warmer temperatures and altered rainfall patterns enhance mosquito growth and virus transmission, while global travel aids the spread of the virus. It emphasizes the necessity for early intervention strategies, including better surveillance, vector control, and adaptations to climate changes, to tackle future dengue transmission issues.