This document discusses the spread of swine flu in India from 2009 to 2015. It provides statistics on the number of cases and deaths in different states and countries over the years. The key points are: swine flu is a contagious disease caused by the H1N1 virus which is similar to one found in pigs; symptoms are like regular flu but can sometimes be severe including pneumonia; those at higher risk include people with existing respiratory problems, compromised immunity, pregnant women, young children and older adults; precautions include maintaining hygiene, rest, drinking fluids and visiting the doctor immediately if symptoms worsen or persist.