India declared itself free from the notifiable Avian Influenza (H5N1) in 2009. Which was the worst affected state with as many as eighteen epicentres of Avian Influenza during November 2008-May 2009?

During the Avian Influenza (H5N1) outbreak from November 2008 to May 2009, Assam was the worst affected state with 18 epicenters. West Bengal also had significant outbreaks but fewer epicenters during this specific period. India declared itself free from notifiable Avian Influenza in late 2009 after controlling these outbreaks.