"Our priority focus has been on the large cities. It is time to focus on rural areas," Zeng was quoted as saying.

He said a large number of people in the countryside, where medical facilities are relatively poor, are being left behind, including the elderly, the sick and the disabled.

The World Health Organization this week also warned of the risks stemming from holiday travelling.

Since the outbreak of the epidemic, China has shared relevant information and data with the international community in an open, transparent and responsible manner
Wu Xi, China foreign ministry official

The UN agency said China was heavily under-reporting deaths from Covid, although it is now providing more information on its outbreak.

"Since the outbreak of the epidemic, China has shared relevant information and data with the international community in an open, transparent and responsible manner," foreign ministry official Wu Xi told reporters.

Chinese virologists said on Friday they have discovered one infection with the Omicron subvariant XBB.1.5, which has been described by WHO scientists as the most transmissible sub-variant so far after its rapid spread in the United States in December. There is no evidence yet that it is more severe.

Health authorities have been reporting five or fewer deaths a day over the past month, numbers which are inconsistent with the long queues seen at funeral homes and the body bags seen coming out of crowded hospitals.

China has not reported Covid fatalities data since Monday. Officials said in December they planned monthly, rather than daily updates, going forward.

Although international health experts have predicted at least 1 million Covid-related deaths this year, China has reported just over 5,000 since the pandemic began, one of the lowest death rates in the world.

Diplomatic tensions

Concerns over data transparency were among the factors that prompted more than a dozen countries to demand pre-departure Covid tests from travellers arriving from China.

Beijing, which had shut its borders from the rest of the world for three years and still demands all visitors get tested before their trip, objects to the curbs.

Wu said accusations by individual countries were "unreasonable, unscientific and unfounded."

Tensions escalated this week with South Korea and Japan, with China retaliating by suspending short-term visas for their nationals. The two countries also limit flights, test travellers from China on arrival, and quarantine the positive ones.

Parts of China were returning to normal life.

In the bigger cities in particular, residents are increasingly on the move, pointing to a gradual, though so far slow, rebound in consumption and economic activity.

An immigration official said on Friday 490,000 daily trips on average were made in and out of China since it reopened on 8 January, only 26 per cent of the pre-pandemic levels.

Singapore-based Chu Wenhong was among those who finally got reunited with their parents for the first time in three years.

"They both got Covid, and are quite old. I feel quite lucky actually, as it wasn’t too serious for them, but their health is not very good," she said.

Caution

While China's reopening has given a boost to financial assets globally, policymakers around the world worry it may revive inflationary pressures.

However, December's trade data released on Friday provided reasons to be cautious about China's recovery pace.

Jin Chaofeng, whose company exports outdoor rattan furniture, said he has no expansion or hiring plans for 2023.

"With the lifting of Covid curbs, domestic demand is expected to improve but not exports," he said.

Data next week is expected to show China's economy grew 2.8% in 2022, its second-slowest since 1976, the final year of Mao Zedong's decade-long Cultural Revolution, according to a Reuters poll.

Some analysts say last year's lockdowns will leave permanent scars on China, including by worsening its already bleak demographic outlook.

Growth is then seen rebounding to 4.9 per cent this year, still well below the pre-pandemic trend.