Detection and typing by molecular techniques of respiratory viruses in children hospitalized for acute respiratory infection in Rome, Italy
Identifieur interne : 003A37 ( Main/Exploration ); précédent : 003A36; suivant : 003A38Detection and typing by molecular techniques of respiratory viruses in children hospitalized for acute respiratory infection in Rome, Italy
Auteurs : Alessandra Pierangeli [Italie] ; Massimo Gentile [Italie] ; Paola Di Marco [Italie] ; Paolo Pagnotti [Italie] ; Carolina Scagnolari [Italie] ; Simona Trombetti [Italie] ; Lelia Lo Russo [Italie] ; Valeria Tromba [Italie] ; Corrado Moretti [Italie] ; Fabio Midulla [Italie] ; Guido Antonelli [Italie]Source :
- Journal of Medical Virology [ 0146-6615 ] ; 2007-04.
Abstract
Detection of a broad number of respiratory viruses is not undertaken currently for the diagnosis of acute respiratory infection due to the large and always increasing list of pathogens involved. A 1‐year study was undertaken on children hospitalized consecutively for acute respiratory infection in a Pediatric Department in Rome to characterize the viruses involved. Two hundred twenty‐seven children were enrolled in the study with a diagnosis of asthma, bronchiolitis, bronchopneumonia, or laringo‐tracheo bronchitis. A molecular approach was adopted using specific reverse transcription (RT)‐PCR assays detecting 13 respiratory viruses including metapneumovirus (hMPV) and the novel coronaviruses NL63 and HKU1; most amplified fragments were sequenced to confirm positive results and differentiate the strain. Viral pathogens were detected in 97 samples (42.7%), with 4.8% of dual infections identified; respiratory syncytial virus (RSV) was detected in 17.2% of children, followed by rhinovirus (9.7%), parainfluenza virus type 3 (PIV3) (7.5%), and influenza type A (4.4%). Interestingly, more than half the patients (9/17) that have rhinovirus as the sole respiratory pathogen had pneumonia. HMPV infected children below 3 years in two peaks in March and June causing bronchiolitis and pneumonia. One case of NL63 infection is described, documenting NL63 circulation in central Italy. In conclusion, the use of a comprehensive number of PCR‐based tests is recommended to define the burden of viral pathogens in patients with respiratory tract infection. J. Med. Virol. 79:463–468, 2007. © 2007 Wiley‐Liss, Inc.
Url:
DOI: 10.1002/jmv.20832
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en">Detection of a broad number of respiratory viruses is not undertaken currently for the diagnosis of acute respiratory infection due to the large and always increasing list of pathogens involved. A 1‐year study was undertaken on children hospitalized consecutively for acute respiratory infection in a Pediatric Department in Rome to characterize the viruses involved. Two hundred twenty‐seven children were enrolled in the study with a diagnosis of asthma, bronchiolitis, bronchopneumonia, or laringo‐tracheo bronchitis. A molecular approach was adopted using specific reverse transcription (RT)‐PCR assays detecting 13 respiratory viruses including metapneumovirus (hMPV) and the novel coronaviruses NL63 and HKU1; most amplified fragments were sequenced to confirm positive results and differentiate the strain. Viral pathogens were detected in 97 samples (42.7%), with 4.8% of dual infections identified; respiratory syncytial virus (RSV) was detected in 17.2% of children, followed by rhinovirus (9.7%), parainfluenza virus type 3 (PIV3) (7.5%), and influenza type A (4.4%). Interestingly, more than half the patients (9/17) that have rhinovirus as the sole respiratory pathogen had pneumonia. HMPV infected children below 3 years in two peaks in March and June causing bronchiolitis and pneumonia. One case of NL63 infection is described, documenting NL63 circulation in central Italy. In conclusion, the use of a comprehensive number of PCR‐based tests is recommended to define the burden of viral pathogens in patients with respiratory tract infection. J. Med. Virol. 79:463–468, 2007. © 2007 Wiley‐Liss, Inc.</div>
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