A 20-year-old patient who approached the Rajiv Gandhi Government General Hospital on March 16 with symptoms of fever, cough and sore throat and was admitted to the isolation ward.
On March 18 his results came back positive. The youth travelled from Delhi to Chennai in a train.
He was a resident of Uttar Pradesh and worked in a salon. He had reached Chennai on March 12. He was staying with a friend in the city and was in search of a job.
His nasal, throat swabs and blood samples were lifted and sent for testing to the King Institute of Preventive Medicine, Guindy. However, the result from the first sample was inconclusive, so a second test was conducted which returned positive.
Officials are now tracing all the persons the youth may have come in contact with including if he had come across with any person who returned from abroad recently.
Authorities, however, are not calling the case one of community transmission yet. Community transmission is when a patient not exposed to any infected person or one who has not travelled to any of the affected countries tests positive.