Anti-dengue operations have been intensified in Tirunelveli district even as the death toll mounted to 29. The outbreak of dengue, whose impact is seen in other southern districts, has put public health officials on their toes.

Director of Public Health R.T. Porkaipandian is in Tirunelveli with a team of officials to supervise the operations. In neighbouring Tuticorin district, four cases were under treatment at Tuticorin Medical College Hospital.