On the evening of 30 December 2019, an "urgent notice on the treatment of pneumonia of unknown cause" was issued by the Wuhan Municipal Health Committee on its Weibo social media account.[33][34] It was reported that since the beginning of December, there had been "a successive series of patients with unexplained pneumonia"—27 suspected cases in total, seven of which were in critical condition and 18 were stable, two of which were on the verge of being discharged soon.[33] The Wuhan Municipal Health Committee reported to the WHO that 27 people had been diagnosed with pneumonia of unknown cause.[34] Most were stallholders from the Huanan Seafood Wholesale Market, seven of whom were in critical condition.