Islamabad, Safar 14, 1436, Dec 6, 2014, SPA -- A health official in Pakistan says four new polio cases have been detected in the country, bringing the number of children affected by the crippling disease this year to 276. Rana Mohammad Safdar, a senior official at the National Institute of Health in Islamabad, said Saturday the new cases were registered this week. He said most of the cases came from the northwest. Safdar said authorities will launch a new three-day vaccination campaign Monday to reach 35 million children across the country, AP reported. --SPA 14:32 LOCAL TIME 11:32 GMT www.spa.gov.sa/w