Evaluation in a clinical setting of the performances of a new rapid confirmatory assay for HIV1/2 serodiagnosis
| Autor: | Catia Sias, C. Pergola, Isabella Abbate, Nicoletta Orchi, Roberta Sciamanna, Marina Pisciotta, Giuseppe Ippolito, Raffaella Libertone, Maria Rosaria Capobianchi |
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| Rok vydání: | 2014 |
| Předmět: |
medicine.medical_specialty
Time Factors Proteinase inhibitor Rome HIV diagnosis Human immunodeficiency virus (HIV) Acute infection HIV Infections medicine.disease_cause Sensitivity and Specificity Virology Internal medicine medicine Humans Serologic Tests Avidity Retrospective Studies Low avidity business.industry medicine.disease Serum samples Infectious Diseases HIV-2 Immunology HIV-1 Coinfection business |
| Zdroj: | Journal of Clinical Virology. 61:166-169 |
| ISSN: | 1386-6532 |
| DOI: | 10.1016/j.jcv.2014.06.015 |
| Popis: | Background and objectives The performances of the new Geenius rapid confirmatory test (Bio-Rad) were evaluated with emphasis towards identifying acute infection (AHI) and discriminating HIV-1/2 in a clinical setting Study design Serum samples from individuals attending the L. Spallanzani Institute in Rome, Italy, for HIV diagnosis (one year retrospective collection), repeatedly reactive at 4th generation HIV-1/2 screening assays, confirmed with HIV-1 and HIV-2 Western blot (New LAV I and II Bio-Rad), were retested with Geenius. Results Of 6,200 samples, 406 resulted repeatedly reactive at screening, including samples from clinically confirmed AHI. New LAV I identified 378 HIV-1-positive samples. Of these, Geenius found 377 HIV-1-positive and one unclassified HIV-positive. New LAV I classified as indeterminate 18 samples, including 14 from AHI. Among these 14, Geenius results were: 12 positive, 1 indeterminate and 1 negative. Of the remaining, 2 resulted Geenius negative (false-positive screening results) and 2 HIV-2. Ten samples were New LAV I-negative (5 AHI). Geenius results were: 1 (AHI) positive and 9 negative. Geenius detected 110 additional positive samples with no p31 reactivity with respect to New LAV I, with an almost similar prevalence of low avidity samples. Geenius confirmed 3 out of 4 HIV-2 infections identified by New LAV II (one coinfected with HIV-1), while rated as HIV-1 the remaining sample, classified as coinfection by New LAV I and II. Conclusions Geenius allows fast, sensitive and accurate confirmation of HIV serodiagnosis, including AHI and HIV-2 infections. The high sensitivity, in particular towards AHI, could avoid additional sampling and molecular tests. |
| Databáze: | OpenAIRE |
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