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Volume 14, Number 10—October 2008


Microbial Interactions during Upper Respiratory Tract Infections

Melinda M. PettigrewComments to Author , Janneane F. Gent, Krystal Revai, Janak A. Patel, and Tasnee Chonmaitree
Author affiliations: Yale School of Public Health, New Haven, Connecticut, USA (M. Pettigrew, J. Gent); University of Texas Medical Branch, Galveston, Texas, USA (K. Revai, J. Patel, T. Chonmaitree);

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Table 1

Characteristics of study participants enrolled through the University of Texas Medical Branch, Galveston, Texas, USA, 2003–2007*

Characteristic No. (%)
Age at enrollment, mo
6–<12 92 (43.4)
12–<18 62 (29.2)
18–<24 30 (14.2)
28 (13.2)
F 103 (48.6)
109 (51.4)
White 124 (58.5)
Black 62 (29.2)
Asian 6 (2.8)
20 (9.4)
Hispanic or Latino 95 (44.8)
Not Hispanic
117 (55.2)
Day care†
No 147 (69.7)
64 (30.3)
Breast-fed for >4 mo
No 173 (82.0)
38 (18.0)
Environmental exposure to tobacco smoke‡
No 145 (68.4)
Yes 67 (31.6)

*Data given for 212 participants who experienced at least 1 upper respiratory infection, were seen by a study physician, and had a nasopharyngeal swab collected for bacterial culture. An additional 82 enrollees were excluded from the study because they did not experience an upper respiratory infection and did not have a nasopharyngeal swab collected for bacterial culture. Some numbers do not add up to 212 because of missing data.
†No. hours and days/week in day care were grouped into any or none. Environmental exposure to tobacco smoke was based on parental self-report.

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