New research finds that more than half of infectious diseases known to affect humans were aggravated by climate change.
During a 2014 visit to his native Colombia, heavy rains caused the worst flooding his hometown had seen in decades and boosted the mosquito population. A mosquito bit Mora, transferring the chikungunya virus and making him a patient during an unprecedented outbreak in the region.In a study published Monday, Mora and his colleagues at the University of Hawaii canvassed tens of thousands of studies to analyze the global impacts of climate change on infectious diseases that affect humans.
Fifty-eight percent “seems like a really high number,” she said, “but it reflects the reality that infectious diseases are driven by what’s going on in our environment.” Voles, for instance, depend on snow cover for winter habitat, Mora said. But diminishing snowpacks have sent the creatures seeking shelter inside people’s homes, where they have been documented transmitting hantavirus.“Climate drives habitat change and disruption around the world. That also brings humans into contact with animal species in ways that we were not in contact with them historically, or haven’t been in the recent past,” Leibler said.
“There’s a good deal of evidence that as temperatures rise, it’s more likely that different sorts of pathogens will be present in drinking water globally,” Leibler said.
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