The affected people, including women, were treated at the local government hospital and several of them referred to the Rajaji Government Hospital in Madurai, about 80 km from the town, police said.
People of several adjoining localities including Lakshmiyapuram, Kammapatti, and Sankaran Kovil Villakku were bitten by the dog which remained elusive.
Efforts were on by the municipal officials to catch the dog which disappeared after running towards a tank.