On 1 January 2020, WHO set up the Incident Management Support Team for dealing with the disease outbreak on an emergency basis.[10] On 5 January 2020, WHO notified all member states about the new outbreak of an unknown pneumonia virus in Hubei province of China.[11] On 10 January, WHO issued a comprehensive package of guidance to countries on how to test for potential cases.[11] By this date, the WHO warned of the risk of human-to-human transmission.[3][3] On 12 January, Chinese scientists shared the genetic sequence of the new virus,[13] and the WHO asked a German team to design a test.[14] On 13 January, WHO confirmed the first case of the disease outside of China, in Thailand.[15] On 14 January, Maria Van Kerkhove of the WHO told in a press briefing that "it is possible that there is limited human-to-human transmission, potentially among families, but it is very clear right now that we have no sustained human-to-human transmission"[16] [17][18]The WHO recommended countries to take precautions due to the human-to-human transmission during earlier SARS and MERS outbreaks.[12][3] On the same day, the WHO's Twitter account reported that "preliminary investigations conducted by the Chinese authorities have found no clear evidence of human-to-human transmission".[19] On 20 January, the WHO released a tweet that it was "now very clear from the latest information that there is at least some human-to-human transmission" that has occurred, given that healthcare workers had been infected.[2] On 22 January, WHO issued a statement stating that the data "suggests that human-to-human transmission is taking place in Wuhan", and called for more investigation.[20] On 22 January, an emergency committee was convened to assess whether the outbreak constituted a public health emergency of international concern.