Dr. Maria Van Kerkhove noted in a press briefing there had been limited human-to-human transmission of the coronavirus (in the 41 confirmed cases), mainly through family members, and that there was a risk of a possible wider outbreak. Dr. Kerkhove noted that human-to-human transmission would not be surprising given our experience with SARS, MERS and other respiratory pathogens.
20-21 January 2020
WHO experts from its China and Western Pacific regional offices conducted a brief field visit to Wuhan.
22 January 2020
WHO mission to China issued a statement saying that there was evidence of human-to-human transmission in Wuhan but more investigation was needed to understand the full extent of transmission.
https://www.who.int/news-room/detail/08-04-2020-who-timeline---covid-19