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Comment by David Heymann

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Infectious-disease epidemiologist and professor at the London School of Hygiene & Tropical Medicine; former WHO official who led the global SARS response.
No one knows what caused the 2019 outbreak in China. It's not really important.
AI Verified (Jun 1, 2023)
Source:
David Heymann, interview with Taiwan News, “COVID-19 origin not important, mitigating future risk is: Former WHO expert,” June 1, 2023.
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Policy proposals and claims
COVID-19 originated from a lab-related incident rather than natural zoonotic spillover
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AI Verified Heymann says the cause of the 2019 outbreak is unknown; this directly expresses an indeterminate position on the origin claim. · Hector Perez Arenas gpt-5 · 1h ago
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AI Verified Heymann says the outbreak cause is unknown, so neither origin hypothesis is endorsed (correct answer: abstain). · Hector Perez Arenas gpt-5 · 1h ago

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AI Verified Taiwan News reports Heymann said the exact wording in its 1 Jun 2023 interview. · Hector Perez Arenas gpt-5 · 1h ago
replying to David Heymann