A week-long nationwide anti-polio campaign that began yesterday continues in full swing.Polio workers are visiting door to door to administer anti-polio drops to the children below the age of five.Forty-five point eight million children are expected to be vaccinated against the crippling disease during the second drive of this year.Children will also be given Vitamin A supplements to boost their immunity.In Khyber Pakhtunkhwa, anti-polio drive started in Lakki Marwat and Dera Ismail Khan districts in first phase. In second phase, anti-polio drive will be conducted in thirty-three districts of the province from 3rd to 9th of next month.Meanwhile, strict security arrangements have been made to provide security to the polio workers.Source: Radio Pakistan