BACKGROUND: Influenza vaccination is recommended for all persons with cystic fibrosis (CF). Despite this recommendation, no study has been performed to determine factors associated with receipt of influenza vaccination among persons with CF. METHODS: We conducted a 2-year cohort study from 2006 through 2007 using the CF Foundation (CFF) Patient Registry to assess predictors of influenza vaccination with logistical regression modeling. RESULTS: In 2006, the cohort consisted of 16,435 persons with vaccination data seen at CFF care centers. Vaccination rates were high for children aged < 5 years (90.5%), children 5 to < 18 years (91.1%), and adults (87.9%). In 2006, decreased odds of vaccination were seen among adults with other or unknown insurance (0.37; 95% CI, 0.15-0.87). Among children 5 to < 18 years and adults, decreased odds of vaccination were seen among Hispanics (children, 0.74; 95% CI, 0.55-0.98; adults, 0.67; 95% CI, 0.46-0.98) and with use of oxygen therapy (children, 0.55; 95% CI, 0.38-0.78; adults, 0.68; 95% CI, 0.55-0.86), whereas four or more clinic visits annually was associated with increased odds of vaccination (children, 2.33; 95% CI, 1.92-2.84; adults, 2.05; 95% CI, 1.71-2.47). Findings associated with decreased vaccine receipt remained significant in sensitivity analyses that assumed missing vaccination data were vaccine positive. CONCLUSIONS: Overall influenza vaccination rates are very high in the US CF population. Knowledge of influenza vaccination predictors among persons with CF may aid clinicians in targeting patients at greater risk for influenza infection. These data may have important implications for the evolving pandemic 2009 influenza A(H1N1).
BACKGROUND: Influenza vaccination is recommended for all persons with cystic fibrosis (CF). Despite this recommendation, no study has been performed to determine factors associated with receipt of influenza vaccination among persons with CF. METHODS: We conducted a 2-year cohort study from 2006 through 2007 using the CF Foundation (CFF) Patient Registry to assess predictors of influenza vaccination with logistical regression modeling. RESULTS: In 2006, the cohort consisted of 16,435 persons with vaccination data seen at CFF care centers. Vaccination rates were high for children aged < 5 years (90.5%), children 5 to < 18 years (91.1%), and adults (87.9%). In 2006, decreased odds of vaccination were seen among adults with other or unknown insurance (0.37; 95% CI, 0.15-0.87). Among children 5 to < 18 years and adults, decreased odds of vaccination were seen among Hispanics (children, 0.74; 95% CI, 0.55-0.98; adults, 0.67; 95% CI, 0.46-0.98) and with use of oxygen therapy (children, 0.55; 95% CI, 0.38-0.78; adults, 0.68; 95% CI, 0.55-0.86), whereas four or more clinic visits annually was associated with increased odds of vaccination (children, 2.33; 95% CI, 1.92-2.84; adults, 2.05; 95% CI, 1.71-2.47). Findings associated with decreased vaccine receipt remained significant in sensitivity analyses that assumed missing vaccination data were vaccine positive. CONCLUSIONS: Overall influenza vaccination rates are very high in the US CF population. Knowledge of influenza vaccination predictors among persons with CF may aid clinicians in targeting patients at greater risk for influenza infection. These data may have important implications for the evolving pandemic 2009 influenza A(H1N1).
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