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The Origins of Covid-19 Are More Complicated Than Once Thought

To trace the pandemic in the other direction, toward its source, the researchers turned to swab samples collected by Chinese scientists from around the Huanan market just before it was shut down by the authorities in January 2020. Those swabs returned a cluster of positives in the south-western corner of the market—on a glove found on one of the stalls, from a grate under one of the cages. Five of the positive samples came from a single stall—a stall that was known to be selling live animals in late 2019, and the same stall where Holmes had taken his photograph of the raccoon dogs five years earlier. This layering of indirect evidence has helped to settle the question of where Covid jumped into humans, but the question of timing has also been a subject of fierce debate.

Wired.co.uk - August 4, 2022

View the full story here: https://www.wired.co.uk/article/tracing-covid-pandemic-origins