The Integrated Disease Surveillance Programme (IDSP) aims to establish a decentralized district-based system for surveillance of communicable and non-communicable diseases in India. It was launched in 2004 to integrate existing disease surveillance activities across programs to avoid duplication and facilitate information sharing. The objectives are to initiate timely public health responses to disease changes at urban and rural levels. Key elements include detection, investigation, data collection, analysis, interpretation and feedback. The IDSP decentralizes surveillance to the state and district levels and strengthens human resources, public health laboratories, and inter-sectoral coordination.