Mapping the first reported cases of COVID-19 in Wuhan

These maps show the estimated concentration of the earliest 156 cases of COVID-19 in Wuhan, China, in December 2019. The highest concentration of those cases centered on the Huanan Seafood Wholesale Market. Even for the subset of 123 individuals with no direct contact with the market, the same pattern emerged, strongly suggesting community transmission of the coronavirus began at or near the market.

Source: Worobey and Levy et al.

Credit: Adapted by Tien Le and Connie Hanzhang Jin/NPR