China quarantined 94 air passengers arriving from Seoul after three people on the flight were discovered to have fevers, state media reported Wednesday.
South Korea is among the countries that have reported a surge in cases in recent days even as the number of fresh cases declines at the epicentre of the disease in China.
Seoul reported the country's 11th death from the virus and 169 new infections Wednesday, taking its overall tally to 1,146 cases -- by far the largest tally outside China.