[sean2]

Sorry, I do see I've been living in a shrinking echo chamber of the news seen by me and my shrinking list of contacts and I should have provided some sources, e.g.: https://www.bloomberg.com/news/articles/2020-04-01/china-con...

I happen to believe SK's report's (long explanation), I happen not to believe China's (looonger explanation), but my opinion really doesn't matter; US officials don't believe the China and that's before considering the US's response may have already been hampered by NIMBYism (https://www.snopes.com/fact-check/us-coronavirus-test/)