Study outlines climate change pathogenic impactsA scientific literature review for empiric examples of impacts from 10 climate hazards influenced by greenhouse gas emissions found that more than 58% of human diseases caused by pathogens—such as dengue, pneumonia, and Zika virus—are made worse by the climate-related hazards.
A team based at the University of Hawaii at Manoa reported the findings today in Nature Climate Change.The greenhouse gas emission-related hazards they examined were warming, drought, heatwaves, wildfires, extreme precipitation, floods, storms, sea level rise, ocean biogeochemical change, and land cover change.
Using two lists of all known infections and pathogens, the researchers reviewed more than 70,000 scientific papers for examples of each combination of climate hazard impacting each of the known diseases.Warming, precipitation, floods, drought, storm, land cover change, ocean climate change, fires, heatwaves and sea level changes were all found to influence diseases.
The diseases were primarily transmitted by vectors, but the group also found other transmission pathways, including waterborne, airborne, direct contact, and foodborne.Though most conditions were aggravated by climate hazards, 63 of 286 diseases were diminished.