Under IDSP data is collected on a weekly (Monday–Sunday) basis. The information is collected on three specified reporting formats, namely “S” (suspected cases), “P” (presumptive cases) and “L” (Laboratory confirmed cases) filled by Health Workers, Clinician and Clinical Laboratory staff. The weekly data gives the time trends. Whenever there is a rising trend of illnesses in any area, it is investigated by the Medical Officers/Rapid Response Teams (RRT) to diagnose and control the outbreak. Data analysis and action are being undertaken by respective districts. Emphasis is being laid on reporting of surveillance data from major hospitals both in public and private sector and also Infectious Disease hospitals. The compilation and disease outbreak alerts has been started recently. On an average 10-15 outbreaks are reported every week to Central Surveillance Unit, IDSP