Influenza > Surveillance Data > Lab-confirmed Hospitalization

Lab-confirmed Hospitalization Surveillance

• Background information
• Case definition
• Reporting
• Pediatric surveillance data
• Adult surveillance data

Background information

Surveillance for adult and pediatric influenza-related hospitalizations is a collaborative project between Oregon hospitals' infection control staff, Oregon Public Health Division's Emerging Infection Program and the Centers for Disease Control and Prevention (CDC). The project began because of an unusually early start to the 2003-2004 influenza season coupled with reports of influenza-associated complications and deaths in children. These anecdotal reports underlined the necessity of conducting population-based surveillance to assess the burden of influenza in pediatric patients. Adult influenza hospitalization surveillance began during the 2005-06 influenza season and expands upon the existing pediatric surveillance structure. The primary objective for these surveillance projects is to determine the rate of influenza among these populations as well as describe the characteristics of children and adults with severe flu. These projects also contribute to evaluations of current influenza vaccine recommendations.

Case definitions

Surveillance is conducted for:

• All ages hospitalized with lab-confirmed influenza (including rapid tests) for residents living in Washington, Clackamas, and Multnomah counties

Reporting

To report an adult or pediatric influenza-associated hospitalization or death in Oregon, please call Meredith Vandermeer in the Acute and Communicable Disease Program at Oregon Public Health Division (971-673-1111) or, for hospital infection control staff, use the eSentinel reporting system.

Pediatric Surveillance Data

• Demographic characteristics (.pdf)
• Procedures, findings, and treatments (.pdf)

  2006-2007: There were 63 hospitalizations and no deaths associated with pediatric influenza in Oregon.

• Demographic characteristics (.pdf)
• Procedures, findings, and treatments (.pdf)

  2005-2006: There were 54 hospitalizations and no deaths associated with pediatric influenza in Oregon.

• Demographic characteristics (.pdf)
• Procedures, findings, and treatments (.pdf) 

• Demographic characteristics (.pdf)
• Procedures, findings, and treatments (.pdf)

• Demographic characteristics (.pdf)
• Procedures, findings, and treatments (.pdf)

Adult Surveillance Data

2007-2008: There were 119 hospitalizations and 4 deaths associated with adult influenza in the Portland tri-county area (Multnomah, Clackamas, Washington)

• Demographic characteristics (.pdf)
• Procedures, findings, and treatments (.pdf)

  2006-2007: There were 67 hospitalizations and 3 deaths associated with adult influenza in the Portland tri-county area (Multnomah, Clackamas, Washington)

• Demographic characteristics (.pdf)
• Procedures, findings, and treatments (.pdf)

2005-2006: There were 89 hospitalizations and 6 deaths associated with adult influenza in the Portland tri-county area (Multnomah, Clackamas, Washington)

• Demographic characteristics (.pdf)
• Procedures, findings, and treatments (.pdf)