There is no sign of the coronavirus in the 33 Sri Lankans, mostly students, who returned from Wuhan, China recently Army media unit says.The students are currently being quarantined at the Diyatalawa Army camp and the Army said that the students are in good health and have not shown any signs of sickness.The Army media unit said that the students will remain at the camp for another seven days and will be allowed to return home if there is no health risk.