Passengers of China-bound flights must provide negative COVID-19 test results before boarding, China's aviation authority said on Tuesday.
It comes as the government looks to further reduce the risk of imported coronavirus cases amid increased international travel.
Nucleic acid tests must be completed within five days of embarkation, the Civil Aviation Administration of China (CAAC) said on its website.
Tests should be conducted at facilities designated or recognised by Chinese embassies in host countries, it said.
The embassies will carefully assess the testing capacity of host countries and formulate travel procedures when testing conditions are met, CAAC said.
The announcement comes as countries struggle with testing capacity and speed. In parts of the United States, receipt of test results can take up to two weeks, while in some other countries, nucleic acid tests are reserved for people who have come in close contact with COVID-19 patients or who have symptoms of the potentially fatal disease.
In the past month, CAAC has allowed more foreign airlines to resume services in China and add flights to the country as the economy recovers.
Iranian President Ebrahim Raisi, seen as a potential successor to Supreme Leader Ayatollah Ali Khamenei, was killed in a helicopter crash in mountainous terrain near the Azerbaijan border, officials and state media said on Monday.
Israel intends to broaden its military operation in Rafah, Defence Minister Yoav Gallant on Monday told a senior aide to US President Joe Biden, who has warned against major action in the southern Gazan city that may risk mass civilian casualties.
Israel describes Rafah, which abuts the Gaza Strip's border with the Egyptian Sinai, as the last stronghold of Hamas Islamists whose governing and combat capabilities it has been trying to dismantle during the more than seven-month-old war.
After weeks of public disagreements with Washington over the Rafah planning, Israel on May 6 ordered Pale
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South Africa's constitutional court ruled on Monday that former president Jacob Zuma was not eligible to run for parliament in this month's election, a decision that was closely watched as it has the potential to affect the outcome of the election.