Delhi has reported 2,456 cases of swine flu this year with 119 fresh cases on a single day.

In order to handle the present outbreak, the Indian government has been urging states to ensure sufficient supply of anti-flu medication and diagnostic tests.
A weakened immune system puts elderly people, pregnant women, young children, diabetics and HIV patients at the highest risk of developing complications.
The H1N1 strain of the influenza virus induces a fever, sore throat, fatigue, chills and headaches. Shortness of breath, chest pain or blue lips are seen in the later stages of the flu. Inhaling droplets ejected from a sick patient loaded with the virus or touching infected surfaces, spreads the infection.
Source-Medindia