Predictive Factors of Detectable Viral Load in HIV Infected Patients

2021 ◽  
Author(s):  
Audreay Bouchard ◽  
François Bourdeau ◽  
Julien Roger ◽  
Vincent-Thierry Taillefer ◽  
Nancy Sheehan ◽  
...  
Keyword(s):  
Viral Load ◽  
Predictive Factors ◽  
Detectable Viral Load

scholarly journals Linkage to intensive adherence counselling among HIV-positive persons on ART with detectable viral load in Gomba district, rural Uganda

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Rita Nakalega ◽  
Nelson Mukiza ◽  
Henry Debem ◽  
George Kiwanuka ◽  
Ronald Makanga Kakumba ◽  
...  
Keyword(s):  
Viral Load ◽  
Health Center ◽  
Health Facility ◽  
Transmission Risk ◽  
World Health ◽  
Hiv Positive ◽  
Art Adherence ◽  
Detectable Viral Load ◽  
Adherence Support ◽  
Adherence Counselling

Abstract Background Antiretroviral therapy (ART) adherence is a primary determinant of sustained viral suppression, HIV transmission risk, disease progression and death. The World Health Organization recommends that adherence support interventions be provided to people on ART, but implementation is suboptimal. We evaluated linkage to intensive adherence counselling (IAC) for persons on ART with detectable viral load (VL). Methods Between January and December 2017, we conducted a retrospective chart review of HIV-positive persons on ART with detectable VL (> 1000 copies/ml), in Gomba district, rural Uganda. We abstracted records from eight HIV clinics; seven health center III’s (facilities which provide basic preventive and curative care and are headed by clinical officers) and a health center IV (mini-hospital headed by a medical doctor). Linkage to IAC was defined as provision of IAC to ART clients with detectable VL within three months of receipt of results at the health facility. Descriptive statistics and multivariable logistic regression analyses were used to evaluate factors associated with linkage to IAC. Results Of 4,100 HIV-positive persons on ART for at least 6 months, 411 (10%) had detectable VL. The median age was 32 years (interquartile range [IQR] 13–43) and 52% were female. The median duration on ART was 3.2 years (IQR 1.8–4.8). A total of 311 ART clients (81%) were linked to IAC. Receipt of ART at a Health Center level IV was associated with a two-fold higher odds of IAC linkage compared with Health Center level III (adjusted odds ratio [aOR] 1.78; 95% CI 1.00–3.16; p = 0.01). Age, gender, marital status and ART duration were not related to IAC linkage. Conclusions Linkage to IAC was high among persons with detectable VL in rural Uganda, with greater odds of linkage at a higher-level health facility. Strategies to optimize IAC linkage at lower-level health facilities for persons with suboptimal ART adherence are needed.

scholarly journals Phylogenetic Characterization of Arboviruses in Patients Suffering from Acute Fever in Rondônia, Brazil

Viruses ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 889
Author(s):  
Jackson Alves da Silva Queiroz ◽  
Luan Felipo Botelho-Souza ◽  
Felipe Souza Nogueira-Lima ◽  
Rita de Cássia Pontello Rampazzo ◽  
Marco Aurélio Krieger ◽  
...  
Keyword(s):  
Viral Load ◽  
Phylogenetic Analyses ◽  
Metropolitan Region ◽  
Evolutionary Analysis ◽  
Detectable Viral Load ◽  
Conventional Pcr ◽  
Serum Samples ◽  
Phylogenetic Characterization ◽  
Genotype V ◽  
Genotype Ii

The purpose of the study was to classify, through phylogenetic analyses, the main arboviruses that have been isolated in the metropolitan region of Porto Velho, Rondônia, Brazil. Serum samples from patients with symptoms suggesting arboviruses were collected and tested by One Step RT-qPCR for Zika, Dengue (serotypes 1–4), Chikungunya, Mayaro and Oropouche viruses. Positive samples were amplified by conventional PCR and sequenced utilizing the Sanger method. The obtained sequences were aligned, and an evolutionary analysis was carried out using Bayesian inference. A total of 308 samples were tested. Of this total, 20 had a detectable viral load for Dengue, being detected DENV1 (18/20), co-infection DENV1 and DENV2 (1/20) and DENV4 (1/20). For Dengue serotype 3 and for the CHIKV, ZIKV, MAYV and OROV viruses, no individuals with a detectable viral load were found. A total of 9 of these samples were magnified by conventional PCR for sequencing. Of these, 6 were successfully sequenced and, according to the evolutionary profile, 5 corresponded to serotype DENV-1 genotype V, and 1 to serotype DENV-4 genotype II. In the study, we demonstrate co-circulation of the DENV-1 genotype V and the DENV-4 genotype II. Co-circulation of several DENV serotypes in the same city poses a risk to the population and is correlated with the increase of the most severe forms of the disease. Similarly, co-circulation of genetically distinct DENV and the occurrence of simultaneous infections can affect recombination events and lead to the emergence of more virulent isolates.

scholarly journals Differences among U.S. States in Estimating the Number of People Living with HIV/AIDS: Impact on Allocation of Federal Ryan White Funding

2007 ◽  
Vol 122 (5) ◽  
pp. 644-656 ◽  
Author(s):  
Denis Nash ◽  
Evie Andreopoulos ◽  
Deborah Horowitz ◽  
Nancy Sohler ◽  
David Vlahov
Keyword(s):  
Viral Load ◽  
Laboratory Data ◽  
People Living With Hiv ◽  
Surveillance Systems ◽  
Detectable Viral Load ◽  
Hiv Positive Women ◽  
Ryan White ◽  
Immunodeficiency Syndrome ◽  
The Impact ◽  
Hiv Aids

Objective. We assessed the impact of differing laboratory reporting scenarios on the completeness of estimates of people living with human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) (PLWHA) in the U.S., which are used to guide allocation of federal Ryan White funds. Methods. We conducted a four-year simulation study using clinical and laboratory data on 1,337 HIV-positive women, including 477 (36%) who did not have AIDS at baseline. We estimated the completeness of HIV (non-AIDS) case ascertainment for three laboratory reporting scenarios: CD4<200 cells/μL and detectable viral load (Scenario A); CD4<500 cells/μL and no viral load reporting (Scenario B); and CD4<500 cells/μL and detectable viral load (Scenario C). Results. Each scenario resulted in an increasing proportion of HIV (non-AIDS) cases being ascertained over time, with Scenario C yielding the highest by Year 4 (Year 1: 69.0%, Year 4: 88.1%), followed by Scenario A (Year 1: 63.3%, Year 4: 84.5%), and Scenario B (Year 1: 43.0%, Year 4: 67.7%). Overall completeness of PLWHA ascertainment after four years was highest for Scenario C (95.8%), followed by Scenario A (94.5%), and Scenario B (88.5%). Conclusions. Differences in laboratory reporting regulations lead to substantial variations in the completeness of PLWHA estimates, and may penalize jurisdictions that are most successful at treating HIV/AIDS patients or those with weak or incomplete HIV/AIDS surveillance systems.

Computerized reaction time battery versus a traditional neuropsychological battery: Detecting HIV-related impairments

2003 ◽  
Vol 9 (1) ◽  
pp. 64-71 ◽  
Author(s):  
RAUL GONZALEZ ◽  
ROBERT K. HEATON ◽  
DAVID J. MOORE ◽  
SCOTT LETENDRE ◽  
RONALD J. ELLIS ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Viral Load ◽  
Reaction Time ◽  
Gold Standard ◽  
Cd4 Count ◽  
Detectable Viral Load ◽  
Limited Data ◽  
Neuropsychological Battery ◽  
Computerized Assessment ◽  
Assessment Measures

In recent years, interest in the use of computerized neuropsychological (NP) assessment measures has increased. However, there are limited data regarding how performance on these measures relates to performance on more traditional, clinical instruments. In the present study, 82 HIV+ men, who were all believed on clinical grounds to have neurobehavioral impairment, completed a traditional NP battery (TNB) and the California Computerized Assessment Package (CalCAP, a collection of computerized reaction time tests). Summary scores based on a TNB, as well as those based on the CalCAP, demonstrated significant associations with both degree of immunosuppression (CD4 count) and detectable viral load in cerebrospinal fluid, but not with detectable viral load in plasma. Established norms on the TNB and CalCAP batteries resulted in classifying 57% and 49% of the HIV+ sample as impaired, respectively. When using the TNB as the “gold standard,” impairment classifications based on CalCAP summary scores exhibited a sensitivity of 68% and a specificity of 77%. Overall agreement on impairment classifications between batteries was low (kappa = .44). Data from this study suggest that traditional NP batteries and computerized reaction time tests do not measure the same thing, and are not interchangeable in examining HIV-related NP impairments. (JINS, 2003, 9, 64–71.)

scholarly journals The importance of the histological and immunohistochemical evaluation for diagnosis of serious cytomegalovirus disease without detectable viral load

2017 ◽  
Vol 37 (5) ◽  
pp. 546-547
Author(s):  
Paula Martín Escuer ◽  
Sara Alvarez Tundidor ◽  
Carlos Ruiz-Zorrilla López ◽  
Ester Hernández García ◽  
Victoria Oviedo Gómez ◽  
...  
Keyword(s):  
Viral Load ◽  
Detectable Viral Load ◽  
Cytomegalovirus Disease

scholarly journals Trends in detectable viral load by calendar year in the Australian HIV observational database

2011 ◽  
Vol 14 (1) ◽  
pp. 10-10 ◽  
Author(s):  
Matthew G Law ◽  
Ian Woolley ◽  
David J Templeton ◽  
Norm Roth ◽  
John Chuah ◽  
...  
Keyword(s):  
Viral Load ◽  
Detectable Viral Load ◽  
Observational Database

scholarly journals High Rate of Non-detectable HIV-1 RNA among Antiretroviral Drug Naive HIV Positive Individuals in Nigeria

2013 ◽  
Vol 4 ◽  
pp. VRT.S12677 ◽  
Author(s):  
Georgina N. Odaibo ◽  
Isaac F. Adewole ◽  
David O. Olaleye
Keyword(s):  
Viral Load ◽  
Undetectable Viral Load ◽  
Antiretroviral Drugs ◽  
High Rate ◽  
Baseline Viral Load ◽  
Hiv Positive ◽  
Detectable Viral Load ◽  
Cell Counts ◽  
Drug Naïve ◽  
Hiv 1

Plasma HIV-1 RNA concentration, or viral load, is an indication of the magnitude of virus replication and largely correlates with disease progression in an infected person. It is a very useful guide for initiation of therapy and monitoring of response to antiretroviral drugs. Although the majority of patients who are not on antiretroviral therapy (ART) have a high viral load, a small proportion of ART naive patients are known to maintain low levels or even undetectable viral load levels. In this study, we determined the rate of undetectable HIV-1 RNA among ART naive HIV positive patients who presented for treatment at the University College Hospital (UCH), Ibadan, Nigeria from 2005 to 2011. Baseline viral load and CD4 lymphocyte cell counts of 14,662 HIV positive drug naive individuals were determined using the Roche Amplicor version 1.5 and Partec easy count kit, respectively. The detection limits of the viral load assay are 400 copies/mL and 750,000 copies/mL for lower and upper levels, respectively. A total of 1,399 of the 14,662 (9.5%) HIV-1 positive drug naive individuals had undetectable viral load during the study period. In addition, the rate of non-detectable viral load increased over the years. The mean CD4 counts among HIV-1 infected individuals with detectable viral load (266 cells/μL; range = 1 to 2,699 cells/μL) was lower than in patients with undetectable viral load (557 cells/μL; range = 1 to 3,102 cells/μL). About 10% of HIV-1 infected persons in our study population had undetectable viral load using the Roche Amplicor version 1.5.

scholarly journals Factors associated with the risk of upper respiratory tract bacterial infections among HIV-positive patients

2020 ◽  
Author(s):  
Agata Skrzat-Klapaczynska ◽  
Marcin Paciorek ◽  
Ewa Firlag-Burkacka ◽  
Andrzej Horban ◽  
Justyna Dominika Kowalska
Keyword(s):  
Viral Load ◽  
Respiratory Tract ◽  
Bacterial Infections ◽  
Cd4 Count ◽  
Hiv Positive ◽  
Upper Respiratory Tract ◽  
Detectable Viral Load ◽  
Factors Associated ◽  
Multivariate Survival ◽  
Upper Respiratory

Background The risk and characteristics of upper respiratory tract (URT) bacterial infections (URT-BI) among HIV (+) patients is understudied. We analyzed factors associated with its occurrence and the spectrum of pathogens among patients routinely followed at the HIV Out-Patient Clinic in Warsaw. Methods All symptomatic HIV (+) patients with available URT swab culture were included into analyses. Patients were followed from the day of registration in the clinic until first positive URT swab culture or last clinical visit. Cox proportional hazard models were used to identify factors associated with positive URT swabs culture (those with p<0.1 in univariate included into multivariable). Results In total 474 patients were included into the analyses, 166 with positive URT swab. In general 416 (87.8%) patients were male, 342 (72.1%) were infected through MSM contact, 253 (53.4%) were on antiretroviral therapy. Median follow-up time was 3.4 (1.3-5.7) years, age 35.2 (30.6-42.6) years and CD4+ count 528 (400-685) cells/μl. The most common pathogens were S. aureus (40.4%) and S. pyogenes (13.9%) (Table 1). Patients with URT-BI were more likely to be MSM (68.5% vs 78.9%; p<0.016), have detectable viral load (20.9% vs 12.0%; p<0.0001) and CD4+ cell count <500 cells/μl (55.2% vs 39.0%; p=0.003) (Table 2). In multivariate survival analyses detectable viral load (HR3.13; 95%Cl: 2.34-4.19) and MSM (1.63;1.09-2.42) were increasing, but older age (0.63;0.58-0.69, per 5 years older) and higher CD4+ count (0.90;0.85-0.95, per 100 cells/μl) decreasing the risk of URT-BI (Table 2). Conclusions URT BI are common among HIV (+) positive patients with high CD4+ count. Similarly to general population most common patogens are S. aureus and S. pyogenes. Risk factors identified in multivariate survival analysis indicate that younger MSM patients with detectable HIV viral load are at highest risk. In clinical practice this group of patients requires special attention.

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