In late Dec 2019, several pneumonia cases in Wuhan, Hubei were identified as viral pneumonia. Wuhan’s health commission suspected those cases were related (相关的) to Huanan Seafood Market. On Jan 1, 2020, the market  suspended (暂停) operation. Teams of experts were sent by the National Health Commission to Wuhan to assist local authorities (管理机构) in their work.