BEIJING — A Beijing government spokesman says the city has recorded a total of 158 confirmed cases since the new outbreak was detected last week at a large wholesale market.

Hu Hejian says close contacts are being traced to locate all possible cases as quickly as possible amid strengthened testing and other prevention and control measures.

Anyone who has been near the Xinfad market since May 30, along with their close contacts, will be quarantined at home for 14 days and tested at least twice, said city government official Zhang Ge.

Beijing reported 21 cases Thursday, down from 31 a day earlier.

Beijing has barred entry to all confirmed and suspected cases, patients with fever and close contacts from abroad and other provinces, Zhang said. China also has barred most foreigners from entering and even foreign diplomats arriving from abroad must undergo two weeks of home quarantine.

All indoor public venues remain closed, Zhang said. Offices, restaurants and hotels in high risk area also will be shut down, he said.