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Volume 15, Number 6—June 2009

Research

Case-based Surveillance of Influenza Hospitalizations during 2004–2008, Colorado, USA

Rosemary Proff, Ken GershmanComments to Author , Dennis Lezotte, and Ann-Christine Nyquist
Author affiliations: University of Colorado Denver, Colorado, USA (R. Proff, D. Lezotte, A-C. Nyquist); Colorado Department of Public Health and Environment, Denver (K. Gershman)

Main Article

Table 2

Timing of peak activity for influenza hospitalizations and influenza-like illness, Colorado, USA, 2004–08

Category Influenza season (October 1–May 31)
2004–05 2005–06 2006–07 2007–08
Hospitalizations, wk 7 5, 9* 11 8
Influenza-like illness, wk 7 52, 4, 11 9 8

*Smaller initial peak during wk 52.

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