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Microbial Mondays
Microbial Mondays

Origins Unresolved: Tracing SARS-CoV-2’s Source

38 min•6 oktober 2025

Om avsnittet

Where did SARS-CoV-2 come from?


In this episode of Microbial Mondays, we unpack the findings from the WHO’s Scientific Advisory Group for the Origins of Novel Pathogens (SAGO)’s recent report. We revisit key theories, from a natural spillover event involving bats or intermediate hosts, to the lab leak hypothesis—and discuss why neither can be dismissed outright.


Join us as we explore what’s known, what’s missing, and why uncovering the virus’s origins matters for preventing future pandemics.


More reading

We covered this topic back in a blog series in 2021:

  • Part 1: ​https://www.microbialmondays.com/post/lab-leaks-and-affinis-excrement-or-how-a-scientist-thinks
  • ​Part 2: https://www.microbialmondays.com/post/where-did-the-virus-come-from-part-ii


Read the SAGO report: https://www.who.int/publications/m/item/independent-assessment-of-the-origins-of-sars-cov-2-from-the-scientific-advisory-group-for-the-origins-of-novel-pathogens

Microbial Mondays med Merel Sijbranda and Alex Cloherty finns tillgänglig på flera plattformar. Informationen på denna sida kommer från offentliga podd-flöden.