Two more cases of A/H1N1 flu have been detected at the World University Games in Serbia, the organizers confirmed on Monday.

The two unidentified athletes are from Argentina and Uganda, the organizing committee said in a statement posted on its official website. Last week, an Australian swimmer was diagnosed with the virus.

"The patients have been isolated as soon as the first symptoms appeared and are now on the infective diseases ward of the Military Medical Academy," said the statement.

"They are feeling well since their cases have mild clinical symptoms," added the statement.

The cases bring to 21 the number of people known to have the A H1N1 virus in the Balkan country.

The 25th Universiade opened in Belgrade on July 1 and ends on July 12.

Bringing together around 10,000 athletes, coaches and other officials from 140 countries and regions, it is the biggest sporting event ever held in the former Yugoslav republic.

(Xinhua News Agency July 7, 2009)