The National Health Commission said one death was reported each in the provinces of Shandong and Sichuan. No information was given about the ages of the victims or whether they had been fully vaccinated, AP reported.
China, where the virus first was detected in late 2019 in the central city of Wuhan, is the last major country trying to stop transmission completely through quarantines, lockdowns and mass testing.
While nine in 10 Chinese have been vaccinated, only 66% of people over 80 have gotten one shot while 40% have received a booster, according to the commission. It said 86% of people over 60 are vaccinated.
Given those figures and the fact that relatively few Chinese have been built up antibodies by being exposed to the virus, some fear millions could die if restrictions were lifted entirely.
Beijing and some other Chinese cities announced that riders can board buses and subways without a virus test for the first time in months. The requirement has led to complaints from some Beijing residents that even though the city has shut many testing stations, most public venues still require COVID-19 tests.
On Sunday, China announced another 35,775 cases from the past 24 hours, 31,607 of which were asymptomatic, bringing its total to 336,165 with 5,235 deaths.
While many have questioned the accuracy of the Chinese figures, they remain relatively low compared to the US and other nations which are now relaxing controls and trying to live with the virus that has killed at least 6.6 million people worldwide and sickened almost 650 million.
China still imposes mandatory quarantine for incoming travelers even as its infection numbers are low compared to its 1.4 billion population.