Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
Volume 9, Number 5—May 2003
Research

Seasonal Patterns of Invasive Pneumococcal Disease

Scott F. Dowell*†Comments to Author , Cynthia G. Whitney†, Carolyn Wright†, Charles E. Rose†, and Anne Schuchat†
Author affiliations: *International Emerging Infections Program, Bangkok, Thailand; †Centers for Disease Control and Prevention, Atlanta, Georgia, USA

Main Article

Table

Characteristics of persons with invasive pneumococcal disease during an annual winter spike in incidence compared with those experiencing invasive pneumococcal disease during the surrounding weeks, 1996–1998.a

Characteristic Percentage of patients with characteristic
p valueb
Nonspike (N=1,647) Spike (N=1,351)
Sex (% male)
54.9
51.4
0.07
Race (% white)
56.6
60.8
0.07
Age (% adult)
74.3
81.7
0.0000013
Survival
87.1
87.5
0.92
State


0.49
California
6.0
4.9

Connecticut
17.7
18.9

Georgia
25.6
25.3

Maryland
20.2
19.1

Minnesota
10.4
11.3

Oregon
6.8
5.8

Tennessee
13.3
14.7

Syndrome


0.24
Bacteremia
35.6
33.0

Pneumonia
56.4
59.6

Meningitis 4.9 4.6

aThe spike period was defined as December 20–January 10 of each year, and the nonspike periods were December 1–19 and January 11–31.
bp value calculated by chi-square test of the 2 x N table, with Yates correction.

Main Article

Page created: December 08, 2010
Page updated: December 08, 2010
Page reviewed: December 08, 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.
file_external