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Volume 22, Number 2—February 2016
Research

Population Effects of Influenza A(H1N1) Pandemic among Health Plan Members, San Diego, California, USA, October–December 2009

Roger A. BitarComments to Author 
Author affiliation: Mission Infectious Disease and Infusion Consultants, Inc., at Palomar Medical Center, Escondido, California and Pomerado Medical Center, Poway, California, USA

Main Article

Table 3

Number of KP health plan members with ILI/influenza diagnosis only versus those with ILI and pneumonia, San Diego, California, USA, October–December 2009*

Characteristics October November December
KP health plan population, San Diego* 495,718 494,911 494,947
Admitted to KP San Diego Medical Center, n = 90 34 52 4
Pneumonia diagnosis upon discharge 13 27 1
ILI/influenza 25 28 3
ILI/influenza, mean hospital LOS, d 4 3.5 2.7
Pneumonia based on chest radiograph 9 24 1
Pneumonia, mean hospital LOS, d
 12.7
 8.5
 4
Admitted to non-KP hospital, n = 81 28 33 20
ILI/influenza 15 10 0
ILI/influenza, mean hospital LOS, d 2.5 3.2 2
Pneumonia 13 23 20
Pneumonia, mean hospital LOS, d
 4.01
 4.95
 5.85
*Mean KP San Diego member population for October–December was 495,192. ILI, influenza-like illness; KP, Kaiser Permanente; LOS, length of stay.

Main Article

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Page created: January 13, 2016
Page updated: January 13, 2016
Page reviewed: January 13, 2016
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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