New coronavirus clusters have been reported in Wuhan city – where the virus first emerged – and the north-eastern province of Jilin in China.
Wuhan reported five new cases on Monday, after confirming its first case since 3 April on Sunday.
Authorities said the small cluster of cases were all from the same residential compound.
China has been easing restrictions in recent weeks and cases had been declining.
Health authorities and experts have warned that as countries emerge from strict lockdowns and people move around more freely, a rise in infections is likely.
The small Wuhan cluster is the first since the end of the strict lockdown on 8 April. All of the latest cases were previously classified as asymptomatic.
Over the weekend, Shulan city in Jilin province, near the borders with Russia and North Korea, reported 11 new cases.