The Chinese Embassy in the United States on Friday announced that all passengers traveling from the U.S. to China will need to undergo coronavirus nucleic acid testing before their departure, starting from September 15.

In a notice, the embassy said all Chinese and foreign travelers will need to be tested within three days before leaving the U.S. and present a negative test result when boarding their flight.

Last month, the embassy asked passengers leaving the U.S. for China via certain third countries to present negative nucleic acid test results before boarding. That requirement will continue to be in place, the embassy said.

For travelers flying from a third country to China via the U.S., they will need to hold a test certified by Chinese embassies and consulates in that country, according to the notice.

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