These were followed ⭐March 5th⭐ – two weeks later – by another case study, this one in the high-prestige scientific journal The New England Journal of Medicine (NEJM):
Rothe C, Schunk M, Sothmann P, et al. (2020) "Transmission of 2019-nCoV Infection from an Asymptomatic Contact in Germany."
https://www.nejm.org/doi/full/10.1056/NEJMc2001468
In case you don't remember, the US has not yet "shut down" at this point. Indeed most people in the United States are at best only vaguely aware that there seems to be some sort of outbreak in China and, by March 5th, Italy. The week in which everything shut down in the US was the week that started Monday March 9th, though most of the businesses that started to shut down did so starting on Thursday March 12th and accelerating through that weekend.
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