Warmer temperatures in the Arctic are thawing the region's permafrost — a frozen layer of soil beneath the ground — and potentially stirring viruses that, after lying dormant for tens of thousands of years, could endanger animal and human health.
from old burial grounds or animal carcasses.
"If there is a virus hidden in the permafrost that we have not been in contact with for thousands of years, it might be that our immune defence is not sufficient," she said. "It is correct to have respect for the situation and be proactive and not just reactive. And the way to fight fear is to have knowledge.
Using a computer model analysis, they suggested the risk of viruses spilling over to new hosts was higher at locations close to where large amounts of glacial meltwater flowed into the lake — a scenario that becomes more likely as the climate warms.Identifying viruses and other hazards contained in the warming permafrost is the first step in understanding what risk they pose to the Arctic, Miner at NASA's Jet Propulsion Laboratory said.
"Abrupt thaw rapidly exposes old permafrost horizons, releasing compounds and microorganisms sequestered in deeper layers," Miner and other researchers noted in the 2021 paperIn the research paper, Miner labelled the direct infection of humans with ancient pathogens released from permafrost as "currently improbable."
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