Dr Satish Ravetkar, senior director, Serum Institute of India, the largest manufacturer of vaccines in India and the institute chosen by the WHO to develop a vaccine against swine flu speaks to Rita Ghose about the swine flu virus and the vaccine.

What is the process of developing the vaccine?
We have received a strain of the virus to develop the vaccine. This has to go through a series of testing before it is released. It will be first tested on animals and then humans. After which we will seek approval from the Drug Control Government of India (DCGI).