Table 2.
Summary of Parameters Used for Estimating RSV and Influenza Incidence in a Community Cohort From Week 40 Through 18 During Four Influenza Seasons
| Season |
||||
|---|---|---|---|---|
| Characteristic | 2006–2007 | 2007–2008 | 2008–2009 | 2009–2010 |
| Study enrollment period (weeks) | 10 | 10 | 12 | 28 |
| Percentage of statewide RSV cases occurring during study enrollment perioda | 63 | 56 | 72 | 99 |
| Percentage of statewide influenza cases occurring during study enrollment perioda | 80 | 92 | 78 | 82 |
| No. of children in community cohort | 2816 | 3073 | 2854 | 2800 |
| No. (%) of children with ≥1 MAARI visit during enrollment period | 802 (28.5) | 1012 (32.9) | 1026 (36.0) | 1353 (48.3) |
| No. (%) of children with valid test resultsb | 458 (57.1) | 405 (40.0) | 555 (54.1) | 646 (47.7) |
Abbreviations: MAARI, medically attended acute respiratory illnesses; RSV, respiratory syncytial virus.
a Statewide data includes all ages.
b The total n enrolled and tested is different than the total n tested in Table 1 because some children had multiple MAARI enrollments in the same enrollment period.