https://www.foxnews.com/politics/china-used-air-travel-to-seed-virus-in-early-stage-top-wh-official-says
https://www.youtube.com/watch?v=dXNTkf5rA4A (2:35)
see also
https://www.businessinsider.com/trump-official-navarro-accuses-china-of-plot-to-seed-coronavirus-2020-5