On 31 January 2020 , an article in The Lancet estimated that 75,815 individuals ( 95 % CrI 37,304–130,330 ) have been infected in Wuhan as of 25 January , with an estimated doubling time of 6·4 days in the period of study .
An article in The Lancet estimated that more than 75,500 individuals have been infected in Wuhan , with an estimated doubling time of 6·4 days in the period of study .