The first case of H3N2 influenza was detected in Assam, and the Health Department was keeping a close watch on the situation, an official bulletin said. According to the bulletin issued by the National Health Mission, Assam on Wednesday night, a confirmed case of H3N2 influenza was detected. "The Health Department is keeping a close watch on the evolving seasonal influenza situation in Assam through the Integrated Disease Surveillance Programme (IDSP) network on real-time basis," it said.