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Sources/Additional Resources:

Atlantic, how DNA evidence uncovered the truth of the leak: https://www.theatlantic.com/health/ar...

History DA, Soviet bioweapons: https://www.historyda.org/biological-...

LA Times: https://www.latimes.com/archives/la-x...

Good details: https://www.helyx.science/post/the-sv...

NYTimes, in-depth: https://www.nytimes.com/2021/06/20/wo...

Washington Post, some details. https://www.washingtonpost.com/wp-srv...

BBC podcast: https://www.bbc.co.uk/programmes/p04x...