South Korea has become the site of the largest outbreak of coronavirus outside mainland China.
The South Korean and American militaries announced on Thursday that they were postponing their annual joint exercises because of fears of an outbreak of the virus that infected military personnel in both countries.
Much military personnel was quarantined and facilities at military bases were closed.
Tests for the new coronavirus tested positive in twenty South Korean soldiers and one American serviceman in South Korea.
1,600 people have been infected in this country, making it the largest outbreak outside mainland China.