About two-thirds of all infectious diseases in humans have their origins in animals. Scientists say the ability of a virus to mutate and adapt from animals to the human system is very rare, but the expansion of the human footprint is making that rare event much more likely. For most people, up until the novel coronavirus took over the headlines, the possibility of a new disease emerging out of nowhere and spreading around the world at a breakneck pace seemed like something out of a science fiction movie. But some members of the scientific community have been sounding the alarm for decades, warning that it was not a matter of if, but when another pandemic would threaten humanity. Why were scientists so sure that conditions were becoming ripe for a pandemic? CBS News spoke to three experts to better understand how human behavior has made such a development more likely than ever. Where did SARS-CoV-2, the virus that causes COVID-19, come from? The simple answer is scientists surmise the virus originated in bats, but they do not know exactly how it reached humans. Despite years of working to catalogue viruses, they had never observed this particular virus before. “It’s clear that… Read full this story
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