Pakistan2 anti-polio campaigners die in Khyber Agency blastNasir KhanJanuary 31, 2013February 1, 2013 by Nasir KhanJanuary 31, 2013February 1, 2013 Khyber Agency: At least two anti-polio campaigners were killed in a landmine blast in Khyber Agency of Pakistan tribal region on Thursday....