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Original Article
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Volume 350:443-450 January 29, 2004 Number 5
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Human Metapneumovirus and Lower Respiratory Tract Disease in Otherwise Healthy Infants and Children
John V. Williams, M.D., Paul A. Harris, Ph.D., Sharon J. Tollefson, B.A., Lisa L. Halburnt-Rush, M.Ed., Joyce M. Pingsterhaus, B.A., Kathryn M. Edwards, M.D., Peter F. Wright, M.D., and James E. Crowe, Jr., M.D.

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ABSTRACT

Background We sought to determine the role of human metapneumovirus in lower respiratory tract illness in previously healthy infants and children.

Methods We tested nasal-wash specimens, obtained over a 25-year period from otherwise healthy children presenting with acute respiratory tract illness, for human metapneumovirus.

Results A viral cause other than human metapneumovirus was determined for 279 of 687 visits for acute lower respiratory tract illness (41 percent) by 463 children in a population of 2009 infants and children prospectively seen from 1976 to 2001. There were 408 visits for lower respiratory tract illness by 321 children for which no cause was identified. Of these 321 children, specimens from 248 were available. Forty-nine of these 248 specimens (20 percent) contained human metapneumovirus RNA or viable virus. Thus, 20 percent of all previously virus-negative lower respiratory tract illnesses were attributable to human metapneumovirus, which means that 12 percent of all lower respiratory tract illnesses in this cohort were most likely due to this virus. The mean age of human metapneumovirus–infected children was 11.6 months, the male:female ratio was 1.8:1, 78 percent of illnesses occurred between December and April, and the hospitalization rate was 2 percent. The virus was associated with bronchiolitis in 59 percent of cases, pneumonia in 8 percent, croup in 18 percent, and an exacerbation of asthma in 14 percent. We also detected human metapneumovirus in 15 percent of samples from 261 patients with upper respiratory tract infection but in only 1 of 86 samples from asymptomatic children.

Conclusions Human metapneumovirus infection is a leading cause of respiratory tract infection in the first years of life, with a spectrum of disease similar to that of respiratory syncytial virus.


Source Information

From the Division of Infectious Diseases, Departments of Pediatrics (J.V.W., S.J.T., L.L.H.-R., J.M.P., K.M.E., P.F.W., J.E.C.), Biomedical Engineering (P.A.H.), and Microbiology and Immunology (P.F.W., J.E.C.), Vanderbilt University Medical Center, Nashville.

Address reprint requests to Dr. Crowe at Vanderbilt University Medical Center, D-7235 Medical Center N., 1161 21st Ave. S., Nashville, TN 37232-2581, or at james.crowe{at}vanderbilt.edu.

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Related Letters:

Human Metapneumovirus and Lower Respiratory Tract Disease in Children
Ho H.-K., Principi N., Esposito S., Bosis S., Williams J. V., Crowe J. E. Jr.
Extract | Full Text | PDF  
N Engl J Med 2004; 350:1788-1790, Apr 22, 2004. Correspondence

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