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A pilot project for case-based reporting of varicella

A pilot project for case-based reporting of varicella Shannon A. Rowe, MPH Immunization Epidemiologist Ohio Department of Health Bea Burkholder, RN BSN Infectious Disease Control Consultant Ohio Department of Health Background

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A pilot project for case-based reporting of varicella

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  1. A pilot project for case-based reporting of varicella Shannon A. Rowe, MPH Immunization Epidemiologist Ohio Department of Health Bea Burkholder, RN BSN Infectious Disease Control Consultant Ohio Department of Health

  2. Background • Vaccination of school-aged children thought to reduce incidence and severity • One dose of vaccine at any visit on or after 12 months of age • Updated vaccine recommendations include requirements for child care and school entry

  3. Vaccine and Reporting Laws • Vaccination requirements will be phased in for Ohio children beginning fall, 2006 • Will need proof of varicella vaccination or disease history • January, 2006: case-based reporting of varicella became law in Ohio • Varicella is a Class A (3) disease to be reported by the end of the work week

  4. Methods • August, 2004 – May, 2005 school year • Data collected from 134 school districts in 55 counties across Ohio • Information collected: • Report date • Onset date • Birth date • Severity of disease • Vaccination status • Vaccination date • Spot Severity: • Severity I: < 50 spots within 30 seconds • Severity II: 50-500 spots • Severity III: > 500 spots

  5. Case Definition • A first occurrence of acute, generalized maculopapulovesicular rash, without other cause (CSTE, 1998), in a school student and at least one of the following: • Physician diagnosis of varicella; • School nurse diagnosis of varicella; or • Parental description consistent with varicella, when clinician examination was absent.

  6. Results • 1,641 reports of varicella • 194 nurses or their representatives from 134 school districts reported

  7. ODH School Pilot Surveillance Project Percent of Cases by Vaccination Status and Age of OnsetAugust, 2004 – May, 2005

  8. ODH School Pilot Surveillance ProjectNumber of Cases Reported by Spot SeverityAugust, 2004 – May, 2005

  9. Discussion • 2005 target year for national case-based surveillance • Sentinel varicella surveillance acceptable interim measure before establishing statewide surveillance • determine the incidence and severity of disease

  10. Case-based reporting in Ohio, 2006 • Cases reported via the Ohio Disease Reporting System (web-based system) • 342 cases reported in the first two weeks • 1,998 cases reported through February 25, 2006 • Large number of reports attributed to: • Reporting began during start of peak season • Reporting awareness • School outbreaks

  11. Conclusions • Case-based varicella reporting will be a daunting task for the local and state health departments to manage • Time and cooperation to determine logistics • More studies are needed to determine vaccine efficacy

  12. Acknowledgements • Thanks to all the school nurses who made this pilot project possible

  13. Questions? Shannon.Rowe@odh.ohio.gov Bea.Burkholder@odh.ohio.gov

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