We hypothesize that when offered influenza vaccine at little or no cost, in a setting where the value of the vaccine is connected to one's high risk child, vaccination rates for parents will approach 90-95%, similar to rates obtained in the Neonatal Intensive Care Unit environment.

Inclusion Criteria:

• Parents or caregiver adults who accompany at-risk children to a Pediatric Care outpatient clinic appointment. High risk children are defined as those 0 to 5 years of age, or who have any of the following diagnoses:

  • Sickle cell disease
  • Asthma
  • Cystic fibrosis
  • Chronic renal disease
  • Congenital heart disease
  • Cancer
  • Any immunodeficiency

Exclusion Criteria:

• Caregivers of children residing in group homes
• Persons whose children do not meet the Center for Disease Control (CDC) definition of high-risk
• Persons who have had allergic reactions to influenza vaccination or any other vaccination in the past
• Persons who are allergic to eggs or egg products
• Persons who are allergic to thimerosol
• Previous diagnosis of Guillain-Barré syndrome (GBS)
• Persons who are moderately to severely ill at the time the vaccination is to be given

Exclusively urban,lower socioeconomic status population limits external generalizability. Study was uncontrolled; historical controls were referenced instead. Baseline vaccination rates were self-reported. Possible bias in at-risk determination.