Influenza is a highly infectious respiratory disease. Influenza is transmitted through the air by a person suffering from flu, coughing or sneezing, creating droplets containing the virus. The virus can remain alive for over twenty-four hours. Complications from influenza can kill and it estimated that tens of thousands of people die in India every year from influenza. The only way to prevent influenza is to get vaccinated against the virus. This is an annual vaccine as the protection developed by vaccination no longer protects the individual once the virus mutates and changes its genetic characteristic every year. Taking annual vaccine is the only way to prevent influenza.