Shanghai announced on Thursday that seven new coronavirus-related pneumonia cases were confirmed the previous day, increasing the total confirmed cases in the city to 16 by midnight Wednesday.

The Shanghai Municipal Health Commission said on Thursday morning that all of the new confirmed patients traveled to Wuhan, Hubei province, or had close contact with people who had traveled there recently. They have been quarantined for medical treatment at designated local hospitals.

An 88-year-old man with chronic diseases in his heart and lungs is in critical condition, and all other patients are in stable condition currently.

The commission said that those who had close contact with the confirmed patients as well as 22 suspected patients are under medical observation.