Chinese health authorities will test all 9 million people in the eastern city of Qingdao for the coronavirus this week after nine cases linked to a hospital were found, the government announced Monday.

The announcement broke a two-month streak with no virus transmissions within China reported, though China has a practice of not reporting asymptomatic cases. The ruling Communist Party has lifted most curbs on travel and business but still monitors travelers and visitors to public buildings for signs of infection.