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The origins of Covid
More or Less: Behind the Stats
English - June 19, 2021 05:00 - 8 minutes - 8.21 MB - ★★★★★ - 740 ratingsNews Education Science Homepage Download Apple Podcasts Google Podcasts Overcast Castro Pocket Casts RSS feed
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To find out where a virus comes from, researchers compare it to other viruses to try to trace its origin. This leads to claims like SARS-CoV-2 is 91 or even 96% similar to other known viruses. But what does that really mean? Tim Harford talks to the virus ecologist Marilyn J Roossinck.