Serveur d'exploration sur la grippe en Espagne

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[RT-PCR for the determinationof the type of influenza virus circulating in the population].

Identifieur interne : 000662 ( Main/Exploration ); précédent : 000661; suivant : 000663

[RT-PCR for the determinationof the type of influenza virus circulating in the population].

Auteurs : R. Cisterna ; E. Meabe

Source :

RBID : pubmed:11086279

Descripteurs français

English descriptors

Abstract

Reverse transcription polymerase chain reaction (RT-PCR) was used to determine the type of flu virus that was circulating mostly in the population of the Basque Country in the 1999-2000 season. In this time period, 124 nasal and pharyngeal aspirations from persons with flu-like symptoms were analyzed. A parallel analysis was carried out using a conventional culture or a shell-vial in MDCK cell line, and immunofluorescence and multiple RT-PCR for the detection of influenza virus and its A and B types. Of the samples studied, 57 (45.96%) were positive for type A by the culture method and 64 (51. 61%) by RT-PCR of a genomic region that codifies the non-structural proteins NS1 and NS2. We also developed a rapid-detection method in which the transcription and amplification are carried out in a single step, using the same mix of transcription-amplification. Based on the results we can conclude that RT-PCR is a very sensitive method for the detection of the flu virus; we believe that its sensitivity, combined with its rapidity, makes it ideal for the detection of these respiratory viruses and the analysis of strains circulating in the population.

PubMed: 11086279


Affiliations:


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Le document en format XML

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<term>Virus de la grippe A (classification)</term>
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<div type="abstract" xml:lang="en">Reverse transcription polymerase chain reaction (RT-PCR) was used to determine the type of flu virus that was circulating mostly in the population of the Basque Country in the 1999-2000 season. In this time period, 124 nasal and pharyngeal aspirations from persons with flu-like symptoms were analyzed. A parallel analysis was carried out using a conventional culture or a shell-vial in MDCK cell line, and immunofluorescence and multiple RT-PCR for the detection of influenza virus and its A and B types. Of the samples studied, 57 (45.96%) were positive for type A by the culture method and 64 (51. 61%) by RT-PCR of a genomic region that codifies the non-structural proteins NS1 and NS2. We also developed a rapid-detection method in which the transcription and amplification are carried out in a single step, using the same mix of transcription-amplification. Based on the results we can conclude that RT-PCR is a very sensitive method for the detection of the flu virus; we believe that its sensitivity, combined with its rapidity, makes it ideal for the detection of these respiratory viruses and the analysis of strains circulating in the population.</div>
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