It was received knowledge well before 11/21, I remember well from that morning on NPR [0]. I read that article and the academic paper [1] behind it. There is nothing there other than thin correlation. No evidence to say a single zoonotic exposure occurred, much less many over several months, over that human to human transmission occurred there. Correlation is great for starting an investigation such as Snow’s [2]. After the map Snow established causation and a mechanism, Worobey does nothing.
