The state government is keeping an eye on airports, railway stations, bus terminals and other transit points to check the spread of swine flu after two children were detected with the disease on Friday.

Five-year-old Salil Naskar of Sonarpur and six-year-old Pranit Roy of Tangra tested positive for swine flu and are under treatment at the isolation ward of Beliaghata ID hospital.

State director of medical education (DME) S N Banerjee said the health department was closely monitoring the situation to prevent the disease from spreading. "We are aware of the problem and have issued necessary instructions to check the spread of the disease," he said.

KMC's health department has also decided to take preventive steps. Chief municipal health officer Debdwipayan Chatterjee on Saturday asked all executive health officials to monitor patients visiting KMC clinics. "If we find patients with symptoms of swine flu such as fever, cough and cold and respiratory problems, we will send them to ID hospital in Beliaghata," said Chatterjee.