TOKYO — Japan and South Korea defended public health restrictions on travelers from China on Wednesday, a day after China stopped issuing new visas in both countries in apparent retaliation.

Chinese embassies stopped issuing new visas for South Koreans and Japanese on Tuesday. It wasn’t clear whether China would expand the visa suspensions to other countries that have imposed stricter virus testing on passengers from China following its COVID-19 surge. South Korean Foreign Minister Park Jin said Wednesday he finds “significantly regrettable” that China stopped issuing short-term visas to South Koreans and called for China to align its pandemic steps with “scientific and objective facts.”

According to South Korea’s Disease Control and Prevention Agency, about 17% of the 2,550 short-term travelers from China from Jan. 2 to Tuesday have tested positive. South Korea has stopped issuing most short-term visas at its consulates in China through the end of January while also requiring all passengers from China, Hong Kong and Macau to submit proofs of negative tests taken within 48 hours of their arrival in addition to COVID-19 tests at the airport.

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