Olympian OP Jaisha, who returned from the Rio Games with fever and body ache last week, has been hospitalised after she was tested positive for Swine Flu. Sports Authority of India Regional Director Shyam Sunder said, the blood samples of Jaisha was submitted to the state-run Rajiv Gandhi Institute of Chest Diseases for test.Jaisha had competed in the women's marathon in Rio.Earlier, another athlete Sudha Singh was found to be suffering from the H1N1 virus. When she arrived from Rio, she was undergoing treatment and medication for suspected Zika virus.