KRISHNAGAR, Feb. 10: At a time when it was believed the state has succeeded to get rid of avian influenza after no unnatural deaths of chickens were reported over the past few days, fresh chicken deaths were reported today in Ranaghat-II block in Nadia. According to reports, over 1,300 chickens died of a mysterious disease in different poultry farms in Ranaghat-II block in Nadia. The symptoms of the disease are similar to avian influenza. The district authorities sent a team to collect samples and take note of the situation.