The number of new coronavirus cases continues to drop in South Korea, but officials are not taking any risks at the border.
Tests on new arrivals have intensified.
They have also joined a three-way video conference with China and Japan to discuss the threat of imported cases.
Al Jazeera's Wayne Hay reports. – Subscribe to our channel: http://aje.io/AJSubscribe – Follow us on Twitter: https://twitter.com/AJEnglish – Find us on Facebook: https://www.facebook.com/aljazeera – Check our website: https://www.aljazeera.com/ #AlJazeeraEnglish #Coronavirus