China has gone a month without announcing any new deaths from the coronavirus, CNBC reports.

The National Health Commission reported four new cases of the virus Friday, May 15, all local cross-infections in the northeastern province of Jilin where a cluster of uncertain origin has been detected in recent days. The last time the commission reported a death was on April 14.

Just 91 people remain in treatment for Covid-19 and 623 others are under isolation and monitoring for being suspected cases or for having tested positive without showing symptoms, including 11 newly detected.

In total, China has reported 4,633 deaths among 82,933 cases since the virus was first detected late last year in the central city of Wuhan.

China has maintained social distancing and bans on foreigners entering the country, but has increasingly opened up the world’s second-largest economy to allow both large factories and small businesses to resume production and dealings with customers. The government plans to hold the ceremonial parliament’s annual session later this month, but with highly limited access for journalists and others.