Giuseppe
Emeritus
Case-based Surveillance of Influenza Hospitalizations during 2004?2008, Colorado, USA (EID, abstract, edited)
[Original Full Document: LINK. EDITED.]
DOI: 10.3201/eid1506.081645
Suggested citation for this article: Proff R, Gershman K, Lezotte D, Nyquist A-C. Case-based seasonal surveillance of influenza hospitalizations during 2004?2008, Colorado, USA. Emerg Infect Dis. 2009 Jun; [Epub ahead of print]
Case-based Surveillance of Influenza Hospitalizations during 2004?2008, Colorado, USA
Rosemary Proff, Ken Gershman, Dennis Lezotte, and Ann-Christine Nyquist
Author affiliations: University of Colorado Denver, Colorado, USA (R. Proff, D. Lezotte, A-C. Nyquist); and Colorado Department of Public Health and Environment, Denver (K. Gershman)
Colorado became the first state to make laboratory-confirmed influenza-associated hospitalizations a case-based reportable condition in 2004. We summarized surveillance for influenza hospitalizations in Colorado during the first 4 recorded influenza seasons (2004?2008). We highlight the similarities and differences among influenza seasons; no 2 seasons were entirely the same. The 2005?06 influenza season had 2 distinct waves of activity (types A and B), the 2006?07 season was substantially later and milder, and 2007?08 had substantially greater influenza B activity. The case-based surveillance for influenza hospitalizations provides information regarding the time course of seasonal influenza activity, reported case numbers and population-based rates by age group and influenza virus type, and a measure of relative severity. Influenza hospitalization surveillance provides more information about seasonal influenza activity than any other surveillance measure (e.g., surveillance for influenza-like illness) currently in widespread use among states. More states should consider implementing case-based surveillance for influenza hospitalizations.
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[Original Full Document: LINK. EDITED.]
DOI: 10.3201/eid1506.081645
Suggested citation for this article: Proff R, Gershman K, Lezotte D, Nyquist A-C. Case-based seasonal surveillance of influenza hospitalizations during 2004?2008, Colorado, USA. Emerg Infect Dis. 2009 Jun; [Epub ahead of print]
Case-based Surveillance of Influenza Hospitalizations during 2004?2008, Colorado, USA
Rosemary Proff, Ken Gershman, Dennis Lezotte, and Ann-Christine Nyquist
Author affiliations: University of Colorado Denver, Colorado, USA (R. Proff, D. Lezotte, A-C. Nyquist); and Colorado Department of Public Health and Environment, Denver (K. Gershman)
Colorado became the first state to make laboratory-confirmed influenza-associated hospitalizations a case-based reportable condition in 2004. We summarized surveillance for influenza hospitalizations in Colorado during the first 4 recorded influenza seasons (2004?2008). We highlight the similarities and differences among influenza seasons; no 2 seasons were entirely the same. The 2005?06 influenza season had 2 distinct waves of activity (types A and B), the 2006?07 season was substantially later and milder, and 2007?08 had substantially greater influenza B activity. The case-based surveillance for influenza hospitalizations provides information regarding the time course of seasonal influenza activity, reported case numbers and population-based rates by age group and influenza virus type, and a measure of relative severity. Influenza hospitalization surveillance provides more information about seasonal influenza activity than any other surveillance measure (e.g., surveillance for influenza-like illness) currently in widespread use among states. More states should consider implementing case-based surveillance for influenza hospitalizations.
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