SidaGhanaV1, Main, Exploration, bibRecord, 001200

Improved performance of seroconversion with a 4th generation HIV Antigen/Antibody assay

Identifieur interne : 001200 ( Main/Exploration ); précédent : 001199; suivant : 001201

Improved performance of seroconversion with a 4th generation HIV Antigen/Antibody assay

Auteurs : J. Van Binsbergen [Pays-Bas] ; A. Siebelink [Pays-Bas] ; A. Jacobs [Pays-Bas] ; W. Keur [Pays-Bas] ; F. Bruynis [Pays-Bas] ; M. Van De Graaf [Pays-Bas] ; J. Van Der Heijden [Pays-Bas] ; D. Kambel [Pays-Bas] ; J. Toonen [Pays-Bas]

Source :

Journal of Virological Methods [ 0166-0934 ] ; 1999.

RBID : ISTEX:1444CE8866D5B24B03600B5B72DEE40D884F8915

Descripteurs français

Wicri :
- geographic : Ouganda.
- topic : Sida, Transfusion sanguine.

English descriptors

Abstract

Recently a new fourth generation microELISA for large scale blood screening has been described in which HIV p24 Ag detection was integrated in an anti-HIV-1/-2 and anti-HIV-1 group O assay based on a direct assay format: (Vironostika HIV Uni-Form II Ag/Ab (Van Binsbergen et al., (1998)). When compared to the third generation a-HIV assay (Vironostika HIV Uni-Form II plus O), the seroconversion window was narrowed with more than one week. A more precise window estimation based on seroconversion series with short sampling time intervals of up to 7 days, is described in parallel with that for the single HIV p24 Ag assay. It was found with 10 relevant seroconversion series that the HIV p24 Ag assay closes the seroconversion window with 6.2 days as compared to the 3rd generation a-HIV assay, while a window reduction of 4 days was found with Vironostika HIV Uni-Form II Ag/Ab. These seroconversion data show that with the new assay two-thirds of the current p24 Ag window is closed. There was no statistical difference in seroconversion sensitivity between the HIV p24 Ag and the new assay format. An extended evaluation of the new assay with subtype HIV-1 M and group O p24 Ag strains and with anti-HIV antibodies obtained from individuals infected with different HIV-1 subtypes showed that all subtypes of HIV-1 M and HIV-1 group O p24 antigen were detected as well as of HIV antibody.

Url:

https://api.istex.fr/document/1444CE8866D5B24B03600B5B72DEE40D884F8915/fulltext/pdf

DOI: 10.1016/S0166-0934(99)00086-5

Affiliations:

Pays-Bas

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Le document en format XML

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<term>Seroconversion</term>
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<term>Subtyped samples</term>
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<term>Uganda</term>
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<term>Untypable undil</term>
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<front><div type="abstract" xml:lang="en">Recently a new fourth generation microELISA for large scale blood screening has been described in which HIV p24 Ag detection was integrated in an anti-HIV-1/-2 and anti-HIV-1 group O assay based on a direct assay format: (Vironostika HIV Uni-Form II Ag/Ab (Van Binsbergen et al., (1998)). When compared to the third generation a-HIV assay (Vironostika HIV Uni-Form II plus O), the seroconversion window was narrowed with more than one week. A more precise window estimation based on seroconversion series with short sampling time intervals of up to 7 days, is described in parallel with that for the single HIV p24 Ag assay. It was found with 10 relevant seroconversion series that the HIV p24 Ag assay closes the seroconversion window with 6.2 days as compared to the 3rd generation a-HIV assay, while a window reduction of 4 days was found with Vironostika HIV Uni-Form II Ag/Ab. These seroconversion data show that with the new assay two-thirds of the current p24 Ag window is closed. There was no statistical difference in seroconversion sensitivity between the HIV p24 Ag and the new assay format. An extended evaluation of the new assay with subtype HIV-1 M and group O p24 Ag strains and with anti-HIV antibodies obtained from individuals infected with different HIV-1 subtypes showed that all subtypes of HIV-1 M and HIV-1 group O p24 antigen were detected as well as of HIV antibody.</div>
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Improved performance of seroconversion with a 4th generation HIV Antigen/Antibody assay

Improved performance of seroconversion with a 4th generation HIV Antigen/Antibody assay

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri