The Tripura Government is continuing the surveillance operations throughout the State even though no fresh cases of bird flu have been detected after conclusion of the culling operations in Kamalpur subdivision of Dhallai district yesterday. This was stated by Tripura Animal Resource Minister Aghor Debbarma at a press meet at the State Secretariat here today. He said after culling of nearly 40,000 birds in Kamalpur, no fresh cases of Avian Influenza have been reported from any part of the state.