Cohort Study in the Kaiser Population to Evaluate the Impact of Shoo the Flu

This project will evaluate the school-based influenza vaccine delivery program Shoo the Flu. The program, implemented by Alameda County, delivered influenza vaccines to all K-5 elementary schools in the Oakland Unified School District from 2014 to 2016. This is a cohort study comparing Kaiser Permanente patients in the catchment areas of the Oakland Unified School District and the West Contra Costa Unified School District, which was identified as a control site. The study has three major goals: 1) to measure the effectiveness of Shoo the Flu on influenza immunization rates, medically attended acute respiratory illness, Oseltamivir prescriptions, laboratory-confirmed influenza, and influenza hospitalizations among elementary school-aged children; 2) to measure the indirect effect of Shoo the Flu on immunization coverage, influenza-like illness, and medical visits among individuals residing in program areas; and 3) to measure indirect effects among unvaccinated individuals associated with school-level vaccination coverage.

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