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      Human Metapneumovirus and Respiratory Syncytial Virus, Brazil

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          Abstract

          We describe the epidemiologic and clinical characteristics of 111 children attending clinics and hospitals in Aracaju, northeast Brazil, with acute respiratory infections attributable to human metapneumovirus (HMPV), respiratory syncytial virus (RSV), or both in May and June 2002. Fifty-three (48%) children were infected with RSV alone, 19 (17%) with HMPV alone, and 8 (7%) had RSV/HMPV co-infections.

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          A newly discovered human pneumovirus isolated from young children with respiratory tract disease

          Bernadette van den Hoogen, Jan C de Jong, Jan Groen … (2001)
          From 28 young children in the Netherlands, we isolated a paramyxovirus that was identified as a tentative new member of the Metapneumovirus genus based on virological data, sequence homology and gene constellation. Previously, avian pneumovirus was the sole member of this recently assigned genus, hence the provisional name for the newly discovered virus: human metapneumovirus. The clinical symptoms of the children from whom the virus was isolated were similar to those caused by human respiratory syncytial virus infection, ranging from upper respiratory tract disease to severe bronchiolitis and pneumonia. Serological studies showed that by the age of five years, virtually all children in the Netherlands have been exposed to human metapneumovirus and that the virus has been circulating in humans for at least 50 years.
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            Human metapneumovirus infections in young and elderly adults.

            Ann Falsey, Dean Erdman, Larry ANDERSON … (2003)
            Human metapneumovirus virus (hMPV) is a newly discovered respiratory pathogen with limited epidemiological data available. Cohorts of young and older adults were prospectively evaluated for hMPV infection during 2 winter seasons. Patients hospitalized for cardiopulmonary conditions during that period were also studied. Overall, 44 (4.5%) of 984 illnesses were associated with hMPV infection, and 9 (4.1%) of 217 asymptomatic subjects were infected. There was a significant difference in rates of hMPV illnesses between years 1 and 2 (7/452 [1.5%] vs. 37/532 [7.0%]; P<.0001). In the second year, 11% of hospitalized patients had evidence of hMPV infection. Infections occurred in all age groups but were most common among young adults. Frail elderly people with hMPV infection frequently sought medical attention. In conclusion, hMPV infection occurs in adults of all ages and may account for a significant portion of persons hospitalized with respiratory infections during some years.
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              Children with Respiratory Disease Associated with Metapneumovirus in Hong Kong

              J.S. Malik Peiris, Wing-Hong Tang, Kwok Chan … (2003)
              Human metapneumovirus (HMPV) is a newly discovered pathogen thought to be associated with respiratory disease. We report the results of a study of 587 children hospitalized with respiratory infection over a 13-month period. HMPV was detected in the nasopharyngeal aspirates from 32 (5.5%) children by reverse transcription-polymerase chain reaction. HMPV infection was associated with clinical diagnoses of pneumonia (36%), asthma exacerbation (23%), or acute bronchiolitis (10%). When compared to those with respiratory syncytial virus infection, children with HMPV infection were older, and wheezing was more likely to represent asthma exacerbation rather than acute bronchiolitis. HMPV viral activity peaked during the spring-summer period in Hong Kong. Phylogenetically, all HMPV virus strains from Hong Kong belonged to one of the two genetic lineages previously described. HMPV contributed to 441.6 hospital admissions per 100,000 population <6 years of age.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Emerg Infect Dis
                Journal ID (publisher-id): EID
                Title: Emerging Infectious Diseases
                Publisher: Centers for Disease Control and Prevention
                ISSN (Print): 1080-6040
                ISSN (Electronic): 1080-6059
                Publication date (Print): December 2003
                Volume: 9
                Issue: 12
                Pages: 1626-1628
                Affiliations
                [* ]Liverpool School of Tropical Medicine, Liverpool, United Kingdom
                [† ]University of Liverpool, Liverpool, United Kingdom
                [‡ ]Federal University of Sergipe, Aracaju, Brazil
                Author notes
                [* ]Address for correspondence: Luis E. Cuevas, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool L3 5QA, UK; fax: 0044 151 705368; email: lcuevas@ 123456liv.ac.uk
                Article
                Publisher ID: 03-0522
                DOI: 10.3201/eid0912.030522
                PMC ID: 3034348
                PubMed ID: 14720409
                SO-VID: 434bbb58-62a6-44c3-9ac7-91b58edce96c
                History
                Categories
                Subject: Dispatch

                ScienceOpen disciplines: Infectious disease & Microbiology
                Keywords: respiratory syncytial virus,acute respiratory infections,human metapneumovirus,brazil,epidemiology,children
                Data availability:
                ScienceOpen disciplines: Infectious disease & Microbiology
                Keywords: respiratory syncytial virus, acute respiratory infections, human metapneumovirus, brazil, epidemiology, children

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