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taoleafy t1_iswig15 wrote

Reply to comment by zeroversion in Next pandemic may come from melting glaciers, new data shows. Analysis of Arctic lake suggests viruses and bacteria locked in ice could reawaken and infect wildlife. by chemistrynerd1994

This may be true but sudden climactic shifts in the past have spurred ecological chaos that have fomented plagues. Plague of Justinian, for example, came in the wake of volcanic eruptions that darkened the skies and cooled the earth. That shift spurred rodents carrying the bacteria to go beyond their normal range in search of food, thus bringing the disease in contact with population centers.

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