Bird flu has been confirmed in Kerala, Rajasthan, Madhya Pradesh, Himachal Pradesh, Haryana and Gujarat so far, the Centre said on Friday and asked these states to contain the disease. States unaffected by Avian Influenza (AI) have been asked to keep a vigil on any unusual mortality among birds and to report immediately so that necessary measures are taken in the fastest possible time, it added. “So far, the disease has been confirmed from six states. It is learnt that culling operations have been completed in both the affected districts of Kerala. The disinfection process is underway,” the government said in a statement. The death of 16 birds has also been reported at DDA Park in Delhi’s Hastsal village and their samples have been sent to a testing lab.