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Deforestation is leading to more infectious diseases in humans

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  • Deforestation is leading to more infectious diseases in humans

    Source: https://www.nationalgeographic.com/s...ses-in-humans/

    Deforestation is leading to more infectious diseases in humans
    As more and more forest is cleared around the world, scientists fear that the next deadly pandemic could emerge from what lives within them.
    By Katarina Zimmer

    PUBLISHED November 22, 2019

    In 1997, clouds of smoke **** over the rainforests of Indonesia as an area roughly the size of Pennsylvania was burned to make way for agriculture, the fires exacerbated by drought. Smothered in haze, the trees couldn’t produce fruit, leaving resident fruit bats with no other option than to fly elsewhere in search of food, carrying with them a deadly disease.

    Not long after the bats settled on trees in Malaysian orchards, pigs around them started to fall sick—presumably after eating fallen fruit the bats had nibbled on—as did local pig farmers. By 1999, 265 people had developed a severe brain inflammation, and 105 had died. It was the first known emergence of Nipah virus in people, which has since caused a string of recurrent outbreaks across Southeast Asia.

    It’s one of many infectious diseases usually confined to wildlife that have spilled over to people in areas undergoing rapid forest clearing. Over the past two decades, a growing body of scientific evidence suggests that deforestation, by triggering a complex cascade of events, creates the conditions for a range of deadly pathogens—such as Nipah and Lassa viruses, and the parasites that cause malaria and Lyme disease—to spread to people...


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