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ICD Code: 487.1 Influenza virus, not otherwise specified; influenza A (H5N1); influenza A (pandemic H1N1, swine flu); influenza A (H7N9); influenza B; influenza virus (seasonal influenza)



ICD Code: 487.1 Article Review
Title: Centers for Disease Control and Prevention; "Influenza Vaccination Coverage Among Children With Asthma---United States, 2004-05 Influenza Season." Morbidity and Mortality Weekly Report; V.56; No.9; 3/9/07; p193
      STUDY DESIGN: In 2005, approximately 8.9% (6.5 million) of U.S. children aged under 18 years were reported to have current asthma. Children with asthma are at high risk for complications from influenza, and influenza vaccination has been determined to safely and effectively reduce rates of influenza in these children. In this study, National Health Interview Survey (NHIS) data from 2005 were used to estimate influenza vaccination coverage during the 2004-05 influenza season for children aged 2-17 years by asthma status and age group. Coverage also was estimated by asthma status and reported number of visits to a health-care provider in the preceding 12 months.
      A total of 5124 children aged 2-17 years were included in the analysis by age group, and 5097 children were included in the analysis by number of health-care visits. Only children who were aged 2-17 years for the entire 2004-05 influenza season were included. A child was considered vaccinated for the 2004-05 influenza season if the child had a reported date of vaccination during September 2004-February 2005.
      VACCINATION BY ASTHMA STATUS: Influenza vaccination coverage levels were reported as follows among all children, those without current asthma, and those with current asthma, respectively (and within the current asthma group, among those without versus with an asthma attack or episode in the past 12 months reported in parentheses): ages 2-4 years, 21.7%, 20.7%, 32.9% (unreliable estimate vs 38.3%); ages 5-12 years, 11.3%, 9.2%, 28.0% (16.4% vs 36.3%); ages 13-17 years, 9.0%, 6.4%, 28.8% (23.5% vs 33.9%); total (2-17 years), 12.3%, 10.3%, 29.0% (20.0% vs 35.9%).
      Influenza vaccination coverage for the 2004-05 influenza season among children aged 2-17 years was 29.0% for children with current asthma and 10.3% for children without current asthma. Children with current asthma had similar rates of vaccination among all age groups, ranging from 32.9% to 28.0% among children aged 2-4 years and 5-12 years, respectively. In contrast, children without current asthma had a wider variation in vaccination coverage by age group, with younger children having higher rates of vaccination than older children (20.7% for ages 2-4 years versus 6.4% for ages 13-17 years). Calculation of influenza vaccination coverage rates in children with current asthma who had experienced an asthma attack or episode during the 12 months preceding the interview indicated that these children had higher coverage rates than those without an attack or episode (35.9% versus 20.0%). The lowest vaccination rate among children with current asthma (16.4%) was for children aged 5-12 years who had not had an asthma attack or episode in the 12 months preceding the interview.
      Among children with the same number of health-care visits during the 12 months preceding the interview, children with asthma who had two through five or 10 or more health-care visits had higher rates of influenza vaccination than children without asthma. In addition, influenza vaccination coverage among children with current asthma increased as the reported number of health-care visits increased. Approximately 10.8% of children with current asthma who had one health-care visit in the preceding year were vaccinated, whereas 42.0% of children with current asthma who had 10 or more visits were vaccinated.

Search Criteria: Text - Morbidity and Mortality Weekly Report; V.56; No.9; 3/9/07; p193