article · Critical Public Health
Despite international efforts to manage HIV, many patients still present with advanced disease. False negative rapid test results present a major hazard by delaying vital treatment and raising the risk of transmission. A clinical case from Muhimbili National Hospital in Tanzania describes a 37-year-old woman who experienced repeatedly false negative rapid HIV tests across multiple healthcare and research facilities, despite presenting with symptoms of advanced illness including respiratory issues, weight loss, and suspected Kaposi sarcoma. Subsequent testing using an Enzyme-Linked Immunosorbent Assay confirmed HIV infection with a high viral load of 747,000 copies per millilitre, alongside a biopsy confirming Kaposi sarcoma. Although antiretroviral therapy was initiated, financial barriers prevented chemotherapy, and the patient died. Reliance purely on standard rapid test algorithms risks severe misdiagnoses in critical cases.
Standard rapid HIV tests can fail, leaving individuals with advanced infection undiagnosed. This delay prevents timely access to life-saving antiretroviral therapy and allows the virus to spread unhindered. Recognising these diagnostic blind spots is vital for healthcare providers and public health authorities to prevent avoidable deaths and curb transmission.
This clinical evidence highlights an unmet operational need for improved diagnostic algorithms and confirmatory testing tools in healthcare centres. Diagnostic developers and public health programmes could target supplementary screening pathways for patients presenting with clinical signs of advanced disease who test negative on rapid tests. The abstract describes a single clinical case report, indicating this work represents an early observational basis for policy and diagnostic adjustments rather than a commercial product.
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Despite global efforts to control Human Immunodeficiency Virus (HIV), a significant number of individuals present for care with advanced HIV disease. A false negative HIV test, where HIV-infected individuals receive negative test results, delays treatment initiation and increases transmission risks. We report a clinical case and outcome of a patient with advanced HIV infection who presented with repeated false negative rapid HIV tests. A 37-year-old Tanzanian woman presented at Muhimbili National Hospital (MNH) with respiratory symptoms, weight loss, and multiple purplish skin lesions suspicious of Kaposi sarcoma. Despite numerous negative rapid HIV test results at different healthcare and research facilities, she tested positive for HIV using Enzyme-Linked Immunosorbent Assay (ELISA) with a viral load of 747,000 copies/mL. A skin biopsy confirmed Kaposi sarcoma. She started on antiretroviral therapy (ART) however, she faced financial barriers to starting chemotherapy, her condition worsened, and she died. This case report shows that the HIV testing algorithm using rapid tests alone may lead to the misdiagnosis of critical HIV cases. It indicates a potential need for additional screening criteria for those testing negative. We recommend that global and national HIV guidelines incorporate pathways that account for false negative results in resource-limited countries to reduce advanced HIV disease incidence, mortality, and HIV transmission.
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DOI: 10.1080/09581596.2025.2499127
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