A woman wearing a face mask passes by posters reminding of precautions against the coronavirus at a subway station in Seoul, South Korea, Friday, Feb. 10, 2023. South Korea says it will remove the entry restrictions it placed on short-term travelers from China since the start of the year as officials see the COVID-19 situation in that country as stabilizing. (AP Photo/Ahn Young-joon)

Health workers walk outside of a COVID-19 testing center at the Incheon International Airport in Incheon, South Korea, Friday, Feb. 10, 2023. South Korea says it will remove the entry restrictions it placed on short-term travelers from China since the start of the year as officials see the COVID-19 situation in that country as stabilizing. (AP Photo/Lee Jin-man)

A woman walks outside of a COVID-19 testing center at the Incheon International Airport In Incheon, South Korea, Friday, Feb. 10, 2023. South Korea says it will remove the entry restrictions it placed on short-term travelers from China since the start of the year as officials see the COVID-19 situation in that country as stabilizing. (AP Photo/Lee Jin-man)

A traveler walks outside of a COVID-19 testing center at the Incheon International Airport In Incheon, South Korea, Friday, Feb. 10, 2023. South Korea says it will remove the entry restrictions it placed on short-term travelers from China since the start of the year as officials see the COVID-19 situation in that country as stabilizing. (AP Photo/Lee Jin-man)

A sign for COVID-19 testing center is seen at the Incheon International Airport in Incheon, South Korea, Friday, Feb. 10, 2023. South Korea says it will remove the entry restrictions it placed on short-term travelers from China since the start of the year as officials see the COVID-19 situation in that country as stabilizing. (AP Photo/Lee Jin-man)

A Chinese flag is seen on the window of a money exchange office in downtown Seoul, South Korea, Friday, Feb. 10, 2023. South Korea says it will remove the entry restrictions it placed on short-term travelers from China since the start of the year as officials see the COVID-19 situation in that country as stabilizing. (AP Photo/Ahn Young-joon)

Passengers coming from China arrive at the Incheon International Airport in Incheon, South Korea, on Jan. 14, 2023. South Korea says it will continue to restrict the entry of short-term travelers from China through the end of February over concerns that the spread of COVID-19 in that country may worsen following the Lunar New Year’s holidays. (AP Photo/Ahn Young-joon)

FILE - Passengers arriving from China prepare for their coronavirus test at a COVID-19 testing center at the Incheon International Airport In Incheon, South Korea, on Jan. 10, 2023. South Korea says it will remove the entry restrictions it placed on short-term travelers from China since the start of the year as officials see the COVID-19 situation in that country as stabilizing. (AP Photo/Ahn Young-joon, File)