Use of fourth-generation rapid combined antigen and antibody diagnostic tests for the detection of acute HIV infection in a community centre for men who have sex with men, between 2016 and 2019.

<h4>Objective</h4>To assess the use of fourth-generation rapid diagnostic tests in identifying acute infection of Human Immunodeficiency Virus (HIV).<h4>Methods</h4>BCN Checkpoint promotes sexual health among men who have sex with men (MSM), with a focus on diagnosing HIV ear...

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Autores principales: Jorge Saz, Albert Dalmau-Bueno, Michael Meulbroek, Ferran Pujol, Josep Coll, Ángel Herraiz-Tomey, Félix Pérez, Giovanni Marazzi, Héctor Taboada, Dante R Culqui, Joan A Caylà, BCN Checkpoint Working Group
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Publicado: Public Library of Science (PLoS) 2021
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spelling oai:doaj.org-article:8092037dbd154c13b18bedfe92165b2e2021-12-02T20:06:22ZUse of fourth-generation rapid combined antigen and antibody diagnostic tests for the detection of acute HIV infection in a community centre for men who have sex with men, between 2016 and 2019.1932-620310.1371/journal.pone.0255065https://doaj.org/article/8092037dbd154c13b18bedfe92165b2e2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0255065https://doaj.org/toc/1932-6203<h4>Objective</h4>To assess the use of fourth-generation rapid diagnostic tests in identifying acute infection of Human Immunodeficiency Virus (HIV).<h4>Methods</h4>BCN Checkpoint promotes sexual health among men who have sex with men (MSM), with a focus on diagnosing HIV early, initiating combined antiretroviral treatment (cART) promptly, and recommending regular repeat testing for those who have tested negative. This cross-sectional study included all test results obtained at the centre between 25 March 2016 and 24 March 2019. The Alere™ HIV Combo (now rebranded to Determine™ HIV Ultra, from Abbott) was used to detect p24 antigen (p24 Ag) and/or immunoglobulin M (IgM) and G (IgG) antibodies to HIV-1/HIV-2 (HIV Ab). Rapid polymerase chain reaction (PCR) confirmatory testing and Western blot (WB) were performed for clients with a positive rapid test result. Confirmed HIV cases were promptly referred to the HIV unit for care and cART prescription.<h4>Results</h4>A total of 12,961 clients attended BCN Checkpoint during the study and 27,298 rapid tests were performed. 450 tests were found to be reactive, of which 430 confirmed as HIV-positive, representing a prevalence of 3.32%. Four confirmed cases (0.93%) were detected as "p24 Ag only", nine (2.09%) as "both p24 and HIV Ab" and 417 (96.98%) as "HIV Ab only". The "p24 Ag only" group had a 1-log higher viral load than the other groups and initiated treatment on the following working day. Overall, there were 20 false-positive results (0.07% and 4.44% of total and reactive tests, respectively), of which 10 positive for "p24 Ag only" and 10 for "HIV Ab only".<h4>Conclusions</h4>Four Acute HIV Infections (AHI), with very high viral loads, have been detected with the "p24 Ag only" while the HIV Ab were still absent. Referral to the HIV unit and initiation of cART on the following working day contributed to improving persons' health and to reduce HIV transmission chain.Jorge SazAlbert Dalmau-BuenoMichael MeulbroekFerran PujolJosep CollÁngel Herraiz-TomeyFélix PérezGiovanni MarazziHéctor TaboadaDante R CulquiJoan A CaylàBCN Checkpoint Working GroupPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0255065 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Jorge Saz
Albert Dalmau-Bueno
Michael Meulbroek
Ferran Pujol
Josep Coll
Ángel Herraiz-Tomey
Félix Pérez
Giovanni Marazzi
Héctor Taboada
Dante R Culqui
Joan A Caylà
BCN Checkpoint Working Group
Use of fourth-generation rapid combined antigen and antibody diagnostic tests for the detection of acute HIV infection in a community centre for men who have sex with men, between 2016 and 2019.
description <h4>Objective</h4>To assess the use of fourth-generation rapid diagnostic tests in identifying acute infection of Human Immunodeficiency Virus (HIV).<h4>Methods</h4>BCN Checkpoint promotes sexual health among men who have sex with men (MSM), with a focus on diagnosing HIV early, initiating combined antiretroviral treatment (cART) promptly, and recommending regular repeat testing for those who have tested negative. This cross-sectional study included all test results obtained at the centre between 25 March 2016 and 24 March 2019. The Alere™ HIV Combo (now rebranded to Determine™ HIV Ultra, from Abbott) was used to detect p24 antigen (p24 Ag) and/or immunoglobulin M (IgM) and G (IgG) antibodies to HIV-1/HIV-2 (HIV Ab). Rapid polymerase chain reaction (PCR) confirmatory testing and Western blot (WB) were performed for clients with a positive rapid test result. Confirmed HIV cases were promptly referred to the HIV unit for care and cART prescription.<h4>Results</h4>A total of 12,961 clients attended BCN Checkpoint during the study and 27,298 rapid tests were performed. 450 tests were found to be reactive, of which 430 confirmed as HIV-positive, representing a prevalence of 3.32%. Four confirmed cases (0.93%) were detected as "p24 Ag only", nine (2.09%) as "both p24 and HIV Ab" and 417 (96.98%) as "HIV Ab only". The "p24 Ag only" group had a 1-log higher viral load than the other groups and initiated treatment on the following working day. Overall, there were 20 false-positive results (0.07% and 4.44% of total and reactive tests, respectively), of which 10 positive for "p24 Ag only" and 10 for "HIV Ab only".<h4>Conclusions</h4>Four Acute HIV Infections (AHI), with very high viral loads, have been detected with the "p24 Ag only" while the HIV Ab were still absent. Referral to the HIV unit and initiation of cART on the following working day contributed to improving persons' health and to reduce HIV transmission chain.
format article
author Jorge Saz
Albert Dalmau-Bueno
Michael Meulbroek
Ferran Pujol
Josep Coll
Ángel Herraiz-Tomey
Félix Pérez
Giovanni Marazzi
Héctor Taboada
Dante R Culqui
Joan A Caylà
BCN Checkpoint Working Group
author_facet Jorge Saz
Albert Dalmau-Bueno
Michael Meulbroek
Ferran Pujol
Josep Coll
Ángel Herraiz-Tomey
Félix Pérez
Giovanni Marazzi
Héctor Taboada
Dante R Culqui
Joan A Caylà
BCN Checkpoint Working Group
author_sort Jorge Saz
title Use of fourth-generation rapid combined antigen and antibody diagnostic tests for the detection of acute HIV infection in a community centre for men who have sex with men, between 2016 and 2019.
title_short Use of fourth-generation rapid combined antigen and antibody diagnostic tests for the detection of acute HIV infection in a community centre for men who have sex with men, between 2016 and 2019.
title_full Use of fourth-generation rapid combined antigen and antibody diagnostic tests for the detection of acute HIV infection in a community centre for men who have sex with men, between 2016 and 2019.
title_fullStr Use of fourth-generation rapid combined antigen and antibody diagnostic tests for the detection of acute HIV infection in a community centre for men who have sex with men, between 2016 and 2019.
title_full_unstemmed Use of fourth-generation rapid combined antigen and antibody diagnostic tests for the detection of acute HIV infection in a community centre for men who have sex with men, between 2016 and 2019.
title_sort use of fourth-generation rapid combined antigen and antibody diagnostic tests for the detection of acute hiv infection in a community centre for men who have sex with men, between 2016 and 2019.
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/8092037dbd154c13b18bedfe92165b2e
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