This is with reference to a news item regarding the visit of a senior UNICEF official raising concerns about the state of polio eradication in the country. Ironically, UNICEF is a key partner including other lead agencies responsible for eradicating polio from the underdeveloped countries. I would suggest that the health organizations especially UNICEF should restore the credibility of the polio drive by explaining how the polio drives were used by the CIA and other secret agencies to get DNA samples of Osama Bin Laden. What is the guarantee that the upcoming polio campaigns will not be bogus and our children will not be victims of the wily intelligence agencies? AHMED MUKHTAR, Karachi, August 11.