Bangladeshi authorities said Tuesday a new outbreak of bird flu had been detected at a village in the north of the country as they struggled to contain the disease. Livestock department spokesman Salahuddin Khan said at least 100 birds were slaughtered on a farm in the northern Kurigram district late Monday after the deadly H5N1 strain of avian influenza was discovered. "This is the fifth district to have been hit by bird flu since it re-emerged in October after a break of four months," Khan said, adding the government had stepped up surveillance.