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Volume 10, Number 4—April 2004

Research

Human Metapneumovirus Infection among Children Hospitalized with Acute Respiratory Illness

James A. Mullins*, Dean D. Erdman*, Geoffrey A. Weinberg†, Kathryn Edwards‡, Caroline B. Hall†, Frances J. Walker*, Marika Iwane*, and Larry J. Anderson*Comments to Author 
Author affiliations: *Centers for Disease Control and Prevention, Atlanta, Georgia, USA; †University of Rochester School of Medicine & Dentistry, Rochester, New York, USA; ‡Vanderbilt University, Nashville, Tennessee, USA

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Table 1

Characteristics of HMPV-positive patients, RSV-positive patients, and the rest of the study cohort, New Vaccine Surveillance Network acute respiratory illness study, August 2000–September 2001

Characteristic HMPV-positive, n = 26 (%) RSV-positive, n = 125 (%) Rest of cohort, n = 517 (%)
Median age
11.5 moa,c
3 mo
7 mo
Range
1–43 mo
<1–56 mo
<1–59 mo
Age distribution



<6 mo
5 (19)b,c
73 (58)a,c
244 (47)
6 mo–1 y
8 (31)b,c
26 (21)a,c
80 (15)
1–2 y
11 (42)b,c
19 (15)a,c
82 (16)
>2 y
2 ( 8)b,c
7 ( 6)a,c
111 (22)
Male
18 (69)
72 (58)
295 (57)
Race



   White (non-Hispanic)
17 (65)
75 (60)
256 (50)
   Black (non-Hispanic)
8 (31)
32 (26)
172 (33)
   Hispanic
1 ( 4)
13 (10)
55 (11)
   Other
0 ( 0)
5 ( 4)
26 ( 5)
   Unknown
0 ( 0)
0 ( 0)
8 ( 2)
Underlying medical condition
14 (54)a,d
36 (29)
163 (31)b,d
Born premature
8 (31)
19 (16)
77 (15)
Breastfed
16 (62)
71 (58)
274 (53)
Exposed to household smoker
13 (50)
50 (41)
236 (46)
Attended daycare
8 (31)
31 (25)
167 (32)
Site



   Nashville
9 (35)
59 (47)
282 (55)
   Rochester 17 (65) 66 (53) 235 (45)

aComparison of HMPV-positive to RSV-positive patients. HMPV, human metapneumovirus; RSV, respiratory syncytial virus.
bComparison of HMPV-positive patients to rest of cohort.
cp<0.001.
dp<0.05.

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