Volume 15, Number 6—June 2009
Research
Case-based Surveillance of Influenza Hospitalizations during 2004–2008, Colorado, USA
Rosemary Proff, Ken Gershman
, Dennis Lezotte, and Ann-Christine Nyquist
, Dennis Lezotte, and Ann-Christine NyquistTable 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.
