As many as 30 people were tested positive for swine flu in the south Indian state Kerala this month, health officials said here Saturday. The highest number of 16 cases were reported from Thiruvananthapuram, followed by Kollam (7), Kannur (3) and one each in Alappuzha, Ernakulam, Thrissur and Malappuram, officials of health department (H1N1 monitoring cell) said. On June 9, one person died due to swine flu at Ernakulam General Hospital, taking the H1N1 death toll in the state to 47 since its outbreak last year, the Press Trust of India reported.