Indian Immunologicals Limited  Indian Immunologicals Limited or IIL is a biopharmaceutical company based in Hyderabad, Telangana, India. IIL is one of the largest vaccine manufacturers in the world. It was established in 1982 by the National Dairy Development Board. It is noted for developing veterinary and human vaccines for foot-and-mouth disease, rabies, bacterial vaccines, canine vaccines, hepatitis, measles, MMR and DPT. IIL is a major supplier of DPT, TT and Hepatitis B vaccines to India’s large Universal Immunization Programme. IIL operates a manufacturing facility in Ooty to manufacture the Vero cell culture rabies vaccine for use in human beings. This plant was set up in 1998 at the specific request of the Government of India in order to phase out use of the older and unsafe sheep brain vaccine (also termed nerve tissue vaccine – NTV) with the modern tissue culture vaccine. The plant, which commenced commercial production in phases from September 2006, meets a large part of the requirements of the Universal Immunization Programme of the Ministry of Health, Govt of India.