Identification of early HIV infections using the fourth generation Abbott ARCHITECT HIV Ag/Ab Combo chemiluminescent microparticle immunoassay (CIA) in San Diego County
| Autor: | Patricia A. McVay, Anna Liza M. Manlutac, Jill S. Giesick |
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| Rok vydání: | 2013 |
| Předmět: |
HIV Antigens
Human immunodeficiency virus (HIV) Fluorescent Antibody Technique HIV Infections Window period HIV Antibodies medicine.disease_cause California Virology Fourth generation Medicine Humans Hiv transmission Acute HIV infection Immunoassay medicine.diagnostic_test business.industry Diagnostic Tests Routine virus diseases Screening assay HIV screening Infectious Diseases HIV-2 Luminescent Measurements HIV-1 RNA Viral business Nucleic Acid Amplification Techniques Algorithms |
| Zdroj: | Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology. 58 |
| ISSN: | 1873-5967 |
| Popis: | Background HIV screening assays have gone through several generations of development in an effort to narrow the “window period” of detection. Utilizing a fourth generation HIV screening assay has the potential to detect earlier HIV infection, thus reducing HIV-1 transmission. Objective To identify acute infections to decrease HIV transmission in San Diego County. Study design Serum specimens were collected from clients seen by multiple submitters in San Diego County. All acceptable specimens were screened using the 4th Gen Combo Assay. Initially reactive specimens were repeated in duplicate and if repeatedly reactive, were confirmed by HIV-1 Immunofluorescent Antibody Assay (IFA). IFA negative/inconclusive specimens were sent for HIV-1 NAT and HIV-2 antibody testing to referral laboratories. BioRad Multispot HIV-1/HIV-2 Rapid Test was also performed on a subset of specimens. Results Of 14,559 specimens received in 20 months, 14,517 specimens were tested. Of the 14,517 specimens that were tested, a total of 279 (1.9%) specimens were CIA repeatedly reactive and 240 of the 279 confirmed by HIV-1 IFA. Thirty-nine gave IFA negative/inconclusive result and 30 were further tested for HIV-1 NAT and 36 for HIV-2 antibody. Thirteen specimens were considered false positives by CIA and 17 specimens were classified as acute infections. Eleven of 39 IFA negative/inconclusive specimens were further tested by Multispot. Five of the 11 were positive by Multispot. Conclusion The fourth generation Abbott ARCHITECT HIV Ag/Ab Combo Assay identified 17 patients who may have been missed by the prior HIV-1 screening assay used at San Diego County Public Health Laboratory. |
| Databáze: | OpenAIRE |
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