Parents and health care workers are caught in the cross-hairs of violence and politics as they attempt to protect their children from Polio in Pakistan. Parents and health care workers are caught in the cross-hairs of violence and politics as they attempt to protect their children from Polio in Pakistan. Parents and health care workers are caught in the cross-hairs of violence and politics as they attempt to protect their children from Polio in Pakistan. Parents and health care workers are caught in the cross-hairs of violence and politics as they attempt to protect their children from Polio in Pakistan.