The document describes India's Integrated Disease Surveillance Project (IDSP), which aims to establish a decentralized, district-based system for surveillance of communicable and non-communicable diseases. Key elements of IDSP include integrating existing surveillance activities, strengthening public health laboratories, using information technology, and developing human resources for surveillance and response at the district, state, and national levels. IDSP collects surveillance data on various diseases through syndromic, presumptive, and confirmed case reporting. Data flows from the district to state and national levels to allow for analysis and coordinated response.