The WHO waited for China to release information about the "mysterious new pneumonia virus".[53] The United Nations agency activated its incident-management system at the country, regional and global level and was standing ready to launch a broader response if it was needed. The WHO's regional office in Manila said in Twitter posts Saturday.: "#China has reported to WHO regarding a cluster of pneumonia cases in Wuhan, Hubei Province.The Govt has also met with our country office, and updated @WHO on the situation. Govt actions to control the incident have been instituted and investigations into the cause are ongoing."[53]