Of 585 such workers surveyed at a large tertiary children's hospital, only 70% thought vaccination for influenza should be required, according to a study published online in the Archives of Pediatric and Adolescent Medicine. Nearly 15% were opposed, and the rest had no opinion or were unsure. The study's authors said that "healthcare workers in children's hospitals may have a unique perspective on influenza vaccines because they routinely recommend other vaccines for children and see the effects of underimmunization."