The threat of Zika virus was looming over the Olympics taking place at Rio. There have been pleas to shift the location of the games at the last moment because of the virus threat but the games still went on as officials made it clear that it is safe to be held there. But now it comes to light that Indian middle-distance runner Sudha Singh, 30, has been diagnosed with viral infection in Bengaluru after returning from the Rio Olympics 2016 on Saturday, with the possibility of her contracting the Zika virus not being ruled out. Singh, who returned to India on Saturday, complained of fever, joint pain and fatigue. She was first admitted to treatment at Sports Authority of India. However, when her blood pressure fell drastically, the authorities rushed her to a hospital. She had participated in the steeplechase competition.

Ms Singh's blood samples have been sent to a virology institute for Zika testing. Doctors say they want to be extra cautious since she was in Brazil where the virus is a major concern. "It is probably just a viral infection but as protocol, we are investigating to rule out Zika," said Dr SR Sarala, a senior scientific officer at the Sports Authority of India. Her blood samples are likely to be sent to a virology institute in Pune on Monday to check for Zika, the fear of which caused many athletes to withdraw from the Rio Games. Sudha is currently being treated in an isolation room in the Bengaluru hospital. Marathon runners OP Jaisha and Kavita Raut, who were Sudha's roommates in Rio, are also said to be showing milder symptoms of a viral infection. The Sports Authority wanted Jaisha in hospital too but she went home to Kerala.