Before January 31 , 2020 , at 16:00 UTC , there were less than 9500 SARS-CoV-2 cases , with under 8,300 within mainland China .
As of 31 January 2020 ( 02:30 UTC ) , there were 9,776 confirmed cases of infection , of which 9,658 were within mainland China .
Severe acute respiratory syndrome coronavirus 2