Bird flu: How critical is the latest outbreak, symptoms and more Amid the Covid-19 pandemic, another scare has come to haunt the country. This time it is the revisitation of the bird flu. Bird flu, also known as avian influenza or avian flu, has come as a double whammy for India that is already fighting its biggest battle against coronavirus pandemic. On Monday, the officials confirmed that Himachal Pradesh has become the fourth state to report cases of bird flu after Rajasthan, Kerala, and Madhya Pradesh, with reports of migratory birds found dead at Pong Dam Lake in Kangra district, have tested positive for the dreaded avian influenza.