Their jumps were staggered for safety reasons and both left the plane at about 14, 000ft (4, 300m), reaching speeds of up to 200mph (322kph) in freefall.
When the group arrived in China on July 14, one of the students was found to have a fever before getting off the plane, and was immediately taken to a hospital, according to Alan Cheung, executive director of the Confucius Institute.