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Volume 15, Number 3—March 2009
Research

Prevalence and Seasonality of Influenza-like Illness in Children, Nicaragua, 2005–2007

Aubree Gordon, Oscar Ortega, Guillermina Kuan, Arthur L. Reingold, Saira Saborio, Angel Balmaseda, and Eva HarrisComments to Author 
Author affiliations: University of California, Berkeley, California, USA (A. Gordon, A. Reingold, E. Harris); Sustainable Sciences Institute, Managua, Nicaragua (O. Ortega); Ministry of Health, Managua (G. Kuan, S. Saborio, A. Balmaseda)

Main Article

Table 2

Incidence of influenza-like illness in cohort of children 2–11 years of age, Managua, Nicaragua, 2005–2007*

Characteristic Person-years, %† ILI episodes‡ Incidence/100 person-years 95% CI
All participants 7,449.4 2,596 34.8 33.5–36.2
Year
2005–2006§ 3,704.5 1,106 29.9 28.1–31.7
2006–2007¶
 3,745.0
 1,490
 39.8
 37.8–41.9
Sex
M 3,778.7 1,280 33.9 32.1–35.8
F
 3,670.7
 1,316
 35.9
 34.0–37.8
Age, y
2 339.2 285 84.0 74.8–94.4
3 721.8 475 65.8 60.2–72.0
4 871.1 418 48.0 43.6–52.8
5 931.6 342 36.7 33.0–40.8
6 916.3 287 31.3 27.9–35.2
7 854.2 252 29.5 26.1–33.4
8 852.7 181 21.2 18.3–24.6
9 815.0 172 21.1 18.2–24.5
10 709.5 122 17.2 14.4–20.5
11
 438.0
 62
 14.2
 11.0–18.2
Asthma
Yes 447.8 322 71.9 64.5–80.2
No 7,001.7 2,274 32.5 31.2–33.8

*ILI, influenza-like illness; CI, confidence interval.
†Person-years were determined by dividing the total number of person-weeks by 52.
‡ILI was defined as an acute fever >37.8°C with cough or sore throat.
§April 16, 2005–April 15, 2006.
¶April 16, 2006–April 15, 2007.

Main Article

Page created: December 07, 2010
Page updated: December 07, 2010
Page reviewed: December 07, 2010
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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