Four more polio cases have been confirmed among infants in Swat, a private television channel reported on Monday. According to Health Ministry sources, one-year-old Shahidullah, two-year-old Yasmeen, 18-month-old Anila and 10-month-old Wajiha have fallen victim to the crippling disease. This brings the number of confirmed polio cases in Swat to 14 this year, the channel said.A three-day immunisation campaign begins in Swat and Mingora from October 12.