HIV Test Results Research Articles

Epidemic of HIV infection among persons who inject drugs in mainland China: a series, cross-sectional study

BackgroundStudies have suggested that the injection drug use (IDU) was no longer the main transmission route of HIV/AIDS in China. However, there has never been a study to assess the national HIV epidemic among persons who inject drugs (PWIDs) based on a nationwide database.MethodsPWIDs among new entrants in detoxification centers with HIV test results were extracted from the 2008–2016 National Dynamic Management and Control Database for Persons Who Use Drugs (NDMCD). Logistic regressions were used to analyze factors associated with HIV infection, and joinpoint regression were used to examine trends in the HIV prevalence.ResultsA total of 103,619 PWIDs among new entrants tested for HIV in detoxification centers between 2008 and 2016 were included in the analysis. The HIV prevalence was 5.0% (n = 5167) among PWIDs. A U-shaped curve of the HIV prevalence decreased from 4.9% in 2008 to 3.3% in 2010 (Annual Percent Change [APC] − 20.6, 95% CI − 32.5 to − 6.7, p < 0.05) and subsequently increased from 3.3% in 2010 to 8.6% in 2016 (APC 17.9, 95% CI 14.5–21.4, p < 0.05) was observed. The HIV prevalence in west regions in China all presented decreased trends, while central and eastern regions presented increased trends.ConclusionsAlthough the HIV prevalence has been declining in general population, the HIV prevalence among PWIDs has shown an increasing trend since 2010. Current policies on HIV control in PWIDs should be reassessed.

Trends and predictors of HIV positivity and time since last test at voluntary counselling and testing encounters among adults in Kilifi, Kenya, 2006-2017.

Background: Little is known about HIV retesting uptake among key populations (KP) and general populations (GP) in Kenya. We assessed trends and predictors of first-time testing (FTT), late retesting (previous test more than one year ago for GP or three months for KP), and test positivity at three voluntary counselling and testing (VCT) centres in coastal Kenya. Methods: Routine VCT data covering 2006-2017 was collected from three VCT centres in Kilifi County. We analysed HIV testing history and test results from encounters among adults 18-39 years, categorized as GP men, GP women, men who have sex with men (MSM), and female sex workers (FSW). Results: Based on 24,728 test encounters (32% FTT), we observed declines in HIV positivity (proportion of encounters where the result was positive) among GP men, GP women, first-time testers and MSM but not among FSW. The proportion of encounters for FTT and late retesting decreased for both GP and KP but remained much higher in KP than GP. HIV positivity was higher at FTT and late retesting encounters; at FSW and MSM encounters; and at encounters with clients reporting lower educational attainment and sexually transmitted infection (STI) symptoms. HIV positivity was lower in GP men, never married clients and those less than 35 years of age. FTT was associated with town, risk group, age 18-24 years, never-married status, low educational attainment, and STI symptoms. Late retesting was less common among encounters with GP individuals who were never married, had Muslim or no religious affiliation, had lower educational attainment, or reported STI symptoms. Conclusions: HIV positive test results were most common at encounters with first-time testers and late re-testers. While the proportion of encounters at which late retesting was reported decreased steadily over the period reviewed, efforts are needed to increase retesting among the most at-risk populations.

Increasing routine HIV testing in low and medium secure forensic settings

AimsThere remain a number of barriers to patients taking HIV tests, and prevalence of HIV in patients with severe mental illness can be higher than those without. Patients in forensic settings may be at even greater risk. National standards state that in areas of high and extremely high prevalence of HIV, testing should be offered routinely on admission to hospital. A review of compliance with these standards took place across low and medium secure male forensic wards in West London, followed by implementation of targeted interventions to increase testing rates. A reaudit was later completed to assess if changes had resulted in lasting effectsMethodA retrospective review of computer records took place to identify all inpatients residing on the low and medium secure wards on the day of data collection. Their pathology records were checked to ascertain if HIV test results were available. If no test was documented here, then patient psychiatric records were searched for documentation of the test being offered.After the initial audit, education of patients and staff regarding the benefits of HIV testing took place, HIV testing was incorporated into primary healthcare routine admission screening and separate consent forms were eradicated.The reaudit took place with data collection occurring in an identical manner.Result183 patients were initially identified across 5 low and 7 medium secure male wards, and 184 on reaudit. The initial audit found that only 30.6% (56/183) of patients had either been offered an HIV test or had a result recorded on the pathology system, but this rose to 82.6% (154/184) on reaudit. After the interventions, 43.4% of all patients had HIV test results available, compared to 23.5% initially. Even where no test result existed, the number of tests offered rose from 7.1% to 39.1% of all patients.ConclusionThis study shows that simple measures to normalise HIV testing and make it part of routine admission screening had dramatic implications for the number of patients being offered an HIV test.There is still room for improvement, however, with 17.4% of patients having neither test results available, nor documentation that a test was offered. This could be a result of poor general engagement with health care services, and would benefit from thorough documentation and assertive outreach.

Frequency and reasons for delayed treatment initiation after HIV diagnosis: cross-sectional study in Lahore, Pakistan

BackgroundWell-timed initiation of HIV therapy enhances life expectancy, decreases mortality and morbidity, and inhibits the transmission of HIV and complications related to it. The purpose of the present survey is to investigate the frequency and reasons for delayed initiation of anti-retroviral therapy (ART) and to determine its relationship with various socio-demographic variables and HIV-related characteristics.MethodsThe analysis is based on a cross-sectional study involving 355 people living with HIV (diagnosed by PCR) who were more than 18 years of age and not receiving HIV therapy before enrolment at the HIV clinics of two selected tertiary-care teaching hospitals in Lahore, Pakistan. In this study, delayed initiation of ART was defined as not attending the HIV management centre or a clinic for ART within 3 months of a confirmed diagnosis. The participants were selected using a systematic probability sampling technique. Bivariate logistic regression was performed using a backward stepwise technique to establish the variables related to delayed onset of HIV therapy. Factors significant at p ≤ 0.20 were considered for multivariate analysis, which was used to describe the association between independent factors and delayed initiation of treatment.ResultsDelayed onset of ART was observed in 28.5% of individuals. Factors such as no schooling (AOR = 5.92; 95% CI: 1.38–25.41; p = 0.017) and occasional household income (AOR = 3.88; 95% CI: 1.01–14.89; p = 0.048) were significantly associated with late onset of ART. Our research findings also indicated that the main reasons for late beginning of HIV therapy were: feeling healthy (45.5%), did not have time to go to the HIV treatment centre (42.6%), did not want to discuss HIV test result (37.6%), and fear of stigma and discrimination within their community (35.6%).ConclusionsLate commencement of HIV therapy in Pakistan is common, and an improved connection is needed between identification of HIV and beginning of therapy. HIV management centres should counsel and monitor patients from the time of a positive HIV test result until they initiate therapy.

Brief Report: HIV Testing, Diagnosis of HIV Infection, Linkage to Medical Care, and Interview for Partner Services Among Transgender Persons-United States, 2012-2017.

Transgender persons are at high risk for HIV infection. Testing is a key component of the national effort to end the HIV epidemic in the United States. Sixty-one local and state health departments and 150 community-based organizations funded by the Centers for Disease Control and Prevention to conduct HIV testing programs. We analyzed HIV testing data submitted to the Centers for Disease Control and Prevention by funded health departments and community-based organizations during 2012-2017. Descriptive analysis examined patterns of HIV testing and key outcomes (diagnosis of HIV infection, linkage to HIV medical care, and interview for partner services) among transgender persons. Multivariate robust Poisson regression was used to assess associations between HIV testing outcomes and demographic characteristics, census region, and test setting. A total of 82,818 HIV tests were provided to transgender persons. Of these, 2280 (2.8%) transgender persons were diagnosed with HIV infection; 1556 (1.9%) received a new and 724 (0.9%) a previous diagnosis with HIV infection. The highest percentage of new HIV diagnosis was found among persons tested in correctional settings (4.6%), non-Hispanic Blacks (3.5%) and transgender women (2.4%). Among newly diagnosed persons, 85.0% were linked to HIV medical care ≤90 days after diagnosis and 63.5% were interviewed for partner services. HIV positivity was high, and the delivery of partner services was low, among transgender persons. HIV testing outcomes among transgender persons varied significantly by demographic characteristics and test setting. HIV prevention programs that are responsive to the needs of transgender persons may address gender-related disparities in HIV testing outcomes.

Comprehensive investigation of sources of misclassification errors in routine HIV testing in Zimbabwe.

IntroductionMisclassification errors have been reported in rapid diagnostic HIV tests (RDTs) in sub‐Saharan African countries. These errors can lead to missed opportunities for prevention‐of‐mother‐to‐child‐transmission (PMTCT), early infant diagnosis and adult HIV‐prevention, unnecessary lifelong antiretroviral treatment (ART) and wasted resources. Few national estimates or systematic quantifications of sources of errors have been produced. We conducted a comprehensive assessment of possible sources of misclassification errors in routine HIV testing in Zimbabwe.MethodsRDT‐based HIV test results were extracted from routine PMTCT programme records at 62 sites during national antenatal HIV surveillance in 2017. Positive‐ (PPA) and negative‐percent agreement (NPA) for HIV RDT results and the false‐HIV‐positivity rate for people with previous HIV‐positive results (“known‐positives”) were calculated using results from external quality assurance testing done for HIV surveillance purposes. Data on indicators of quality management systems, RDT kit performance under local climatic conditions and user/clerical errors were collected using HIV surveillance forms, data‐loggers and a Smartphone camera application (7 sites). Proportions of cases with errors were compared for tests done in the presence/absence of potential sources of errors.ResultsNPA was 99.9% for both pregnant women (N = 17224) and male partners (N = 2173). PPA was 90.0% (N = 1187) and 93.4% (N = 136) for women and men respectively. 3.5% (N = 1921) of known‐positive individuals on ART were HIV negative. Humidity and temperature exceeding manufacturers’ recommendations, particularly in storerooms (88.6% and 97.3% respectively), and premature readings of RDT output (56.0%) were common. False‐HIV‐negative cases, including interpretation errors, occurred despite staff training and good algorithm compliance, and were not reduced by existing external or internal quality assurance procedures. PPA was lower when testing room humidity exceeded 60% (88.0% vs. 93.3%; p = 0.007).ConclusionsFalse‐HIV‐negative results were still common in Zimbabwe in 2017 and could be reduced with HIV testing algorithms that use RDTs with higher sensitivity under real‐world conditions and greater practicality under busy clinic conditions, and by strengthening proficiency testing procedures in external quality assurance systems. New false‐HIV‐positive RDT results were infrequent but earlier errors in testing may have resulted in large numbers of uninfected individuals being on ART.

\u201cWhen you have a high life, and you like sex, you will be afraid\u201d: a qualitative evaluation of adolescents\u2019 decision to test for HIV in Zambia and Kenya using the health belief model

BackgroundHIV testing among adolescents is significantly lower than among adults and many adolescents living with HIV do not know their status. Adolescent perceptions of HIV testing are poorly understood and may negatively affect testing uptake. Using a qualitative design, this study sought to explore perceptions about HIV testing and treatment among adolescents living with HIV and adolescents of unknown HIV status in Lusaka, Zambia and Kenya.MethodsStudy participants were adolescents aged 15–19 years old. The adolescents living with HIV were recruited from HIV support groups at health facilities. Adolescents of unknown HIV status were recruited from existing adolescent groups within the community. In both Zambia and Kenya, four focus group discussions (FGDs) were conducted with adolescents living with HIV and four FGDs were conducted with adolescents whose HIV status was unknown, for a total of 16 FDGs. FGDs consisted of 6–12 participants, a moderator, and a note-taker. FGDs were audio-recorded, transcribed, and translated into transcripts. Transcripts were coded in the qualitative analysis software program MAXQDA v. 12. Data reduction and summary tables were generated to help identify themes across the two study population groups. Data were interpreted within the health belief model.ResultsAdolescents discussed the challenges of facing a positive HIV test result, including fear of a positive result and need to change their lifestyle, fear of social isolation, and perception of the lost opportunity to achieve future dreams. Most adolescents of unknown status were not as aware of the benefits of learning their HIV status, nor were they aware of the ability to live a long and healthy life on ART. HIV-positive adolescents reported that the messages targeted towards adolescents focus on the need to remain HIV-negative, as opposed to the benefits of knowing one’s status. Adolescents described age and requirements for parental permission as a significant limitation in their ability to access HIV testing.ConclusionsAdolescents require more information about the benefits of testing early and the ability to live a long and healthy life on ART. Educating adolescents that HIV testing is a normative behavior among their peers could strengthen HIV testing among adolescents.

Test and Prevent: Evaluation of a Pilot Program Linking Clients With Negative HIV Test Results to Pre-exposure Prophylaxis in Zimbabwe.

As HIV testing increases worldwide, programs are reaching individuals without HIV infection who are at risk of exposure and may be candidates for oral pre-exposure prophylaxis (PrEP). Although linkage of individuals with HIV infection to treatment is a global priority (referred to as "test and treat"), less attention is given to individuals with negative HIV test results. We developed the "Test and Prevent" pilot program to intentionally link at-risk clients with negative HIV test results to PrEP services. The intervention included risk assessment of all clients with a negative result from HIV testing (with national risk assessment tool), accompanied referral, fast-tracking, and targeting follow-up. The intervention was conducted in Bulawayo, Zimbabwe, at 6 public sector sites from October 2019 to February 2020. We collected routine monitoring data from all study sites and tracked referral completion and PrEP initiation among clients who enrolled. We conducted in-depth interviews with providers (n=12), facility managers (n=5), and female clients (n=17) to explore acceptability. Among clients referred for PrEP (n=206), 98% completed their referrals and started PrEP. However, only 3% of clients who received a negative test result during the study period were referred. Low referrals stemmed from lack of screening (39% of clients with negative HIV test results were not screened) and lack of eligibility among clients who were screened (only 6% of those screened qualified as candidates for PrEP per the national screening tool). Qualitative results indicate that some providers purposefully did not complete screening with clients they felt were not at risk and that workload could have contributed to low screening uptake.Qualitative interviews showed that Test and Prevent was acceptable among both providers and clients. Clients were happy to learn about PrEP following HIV testing, and the additional support of accompanied referrals and fast-tracking encouraged them to access PrEP and made them feel valued. Providers were burdened by workload constraints but felt that Test and Prevent was important and should be scaled to other sites. Intentionally linking clients with negative results to PrEP immediately following HIV testing was found to be acceptable from both provider and client perspectives, yet screening procedures need closer examination and reinforcement for the program to realize a larger impact.

Trends and predictors of HIV positivity and time since last test at voluntary counselling and testing encounters among adults in Kilifi, Kenya, 2006-2017.

Background: Little is known about HIV retesting uptake among key populations (KP) and general populations (GP) in Kenya. We assessed trends and predictors of first-time testing (FTT), late retesting (previous test more than one year ago for GP or three months for KP), and test positivity at three voluntary counselling and testing (VCT) centres in coastal Kenya. Methods: Routine VCT data covering 2006-2017 was collected from three VCT centres in Kilifi County. We analysed HIV testing history and test results from encounters among adults 18-39 years, categorized as GP men, GP women, men who have sex with men (MSM), and female sex workers (FSW). Results: Based on 24,728 test encounters (32% FTT), we observed declines in HIV positivity (proportion of encounters where the result was positive) among GP men, GP women, first-time testers and MSM but not among FSW. The proportion of encounters for FTT and late retesting decreased for both GP and KP but remained much higher in KP than GP. HIV positivity was higher at FTT and late retesting encounters; at FSW and MSM encounters; and at encounters with clients reporting lower educational attainment and sexually transmitted infection (STI) symptoms. HIV positivity was lower in GP men, never married clients and those less than 35 years of age. FTT was associated with town, risk group, age 18-24 years, never-married status, low educational attainment, and STI symptoms. Late retesting was less common among encounters with GP individuals who were never married, had Muslim or no religious affiliation, had lower educational attainment, or reported STI symptoms. Conclusions: HIV positive test results were most common at encounters with first-time testers and late re-testers. While the proportion of encounters at which late retesting was reported decreased steadily over the period reviewed, efforts are needed to increase retesting among the most at-risk populations.

Mobile Health–Supported HIV Self-Testing Strategy Among Urban Refugee and Displaced Youth in Kampala, Uganda: Protocol for a Cluster Randomized Trial (Tushirikiane, Supporting Each Other)

BackgroundHIV is the leading cause of mortality among youth in sub-Saharan Africa. Uganda hosts over 1.43 million refugees, and more than 83,000 live in Kampala, largely in informal settlements. There is limited information about HIV testing uptake and preferences among urban refugee and displaced youth. HIV self-testing is a promising method for increasing testing uptake. Further, mobile health (mHealth) interventions have been effective in increasing HIV testing uptake and could be particularly useful among youth.ObjectiveThis study aims to evaluate the feasibility and effectiveness of two HIV self-testing implementation strategies (HIV self-testing intervention alone and HIV self-testing combined with an mHealth intervention) in comparison with the HIV testing standard of care in terms of HIV testing outcomes among refugee/displaced youth aged 16 to 24 years in Kampala, Uganda.MethodsA three-arm cluster randomized controlled trial will be implemented across five informal settlements grouped into three sites, based on proximity, and randomization will be performed with a 1:1:1 method. Approximately 450 adolescents (150 per cluster) will be enrolled and followed for 12 months. Data will be collected at the following three time points: baseline enrollment, 8 months after enrollment, and 12 months after enrollment. Primary outcomes (HIV testing frequency, HIV status knowledge, linkage to confirmatory testing, and linkage to HIV care) and secondary outcomes (depression, condom use efficacy, consistent condom use, sexual relationship power, HIV stigma, and adolescent sexual and reproductive health stigma) will be evaluated.ResultsThe study has been conducted in accordance with CONSORT (Consolidated Standards of Reporting Trials) guidelines. The study has received ethical approval from the University of Toronto (June 14, 2019), Mildmay Uganda (November 11, 2019), and the Uganda National Council for Science and Technology (August 3, 2020). The Tushirikiane trial launched in February 2020, recruiting a total of 452 participants. Data collection was paused for 8 months due to COVID-19. Data collection for wave 2 resumed in November 2020, and as of December 10, 2020, a total of 295 participants have been followed-up. The third, and final, wave of data collection will be conducted between February and March 2021.ConclusionsThis study will contribute to the knowledge of differentiated HIV testing implementation strategies for urban refugee and displaced youth living in informal settlements. We will share the findings in peer-reviewed manuscripts and conference presentations.Trial RegistrationClinicalTrials.gov NCT04504097; https://clinicaltrials.gov/ct2/show/NCT04504097.International Registered Report Identifier (IRRID)DERR1-10.2196/26192

Utilization of HIV Test Service Among Pregnant Women's Partners and Its Associated Factors in Selected Sub-Cities of Addis Ababa, 2019: A Community-Based Cross-Sectional Study.

BackgroundSignificant progress has been made towards achieving the 90-90-90 global targets by 2020. Nationally, 72% of HIV-positive people aged 15–64 years in urban areas were aware of their HIV status. There is low habit of male partner accompanying pregnant women during ANC visit. This study assessed the HIV test service utilization and associated factors among pregnant women’s partners in Addis Ababa.MethodsA community-based cross-sectional study design was conducted from January to February 2020 in Addis Ababa town. A multistage sampling method was used to recruit 812 participants. Data were entered into EpiData version 4.1 and analysis was done by using SPSS version 25.0. The presence and strength of significant association with outcome variables in multivariable analysis were determined with P<0.05 and at 95% CI, respectively.ResultsAmong respondents, 63.7% [95% CI (60–67%)] of pregnant woman partners had tested for HIV/AIDS. Knowledge on the route of HIV transmission from mother to child (AOR=1.9, 95% CI (1.3–2.7)), knowledge on ways of prevention of HIV from mother to child transmission (AOR=0.26, 95% CI (0.17–0.38)), previous history of couple HIV counseling (AOR=3.7, 95% CI (2.3–6.1)), discussion about HCT and ANC services with a partner (AOR=6.3, 95% CI (4.0–9.8)), heard about discordant HIV test result (AOR=1.6, 95% CI (1.4–4)) were significantly associated with partner HIV test.ConclusionHIV testing service utilization among male partners of pregnant women was good in the study area. The knowledge on ways of prevention of HIV from mother to child transmission, those who received couple HIV counseling before, those who discussed HCT at ANC services with a partner, and heard about discordant HIV test results were predictors of HIV test utilization among pregnant women partner. Therefore, increasing community awareness on the pregnant women partner testing should be planned to enhance male partner HIV testing during in antenatal care follow-up.

The effects of HIV self-testing on the uptake of HIV testing, linkage to antiretroviral treatment and social harms among adults in Africa: A systematic review and meta-analysis.

IntroductionHIV infection is still a global public health problem. More than 75% of HIV-infected people are in Africa, and up to 54% are unaware of their HIV status, limiting access to antiretroviral treatment.Context and purpose of the studyThis review aimed to determine whether HIV self-testing (HIVST) increases the uptake of testing, the yield of new HIV-positive diagnoses, and the linkage to antiretroviral treatment, and social harms among adults in Africa.MethodsPubMed, The Cochrane Central Register of Controlled Trials (CENTRAL), Pan African Clinical Trials Registry, The Cochrane Database of Systematic Reviews (CDSR), Databases of s of Reviews of Effectiveness (DARE), Social Sciences Citation Index, Web of Science and African Index Medicus databases were searched from 1998 to 2019 (updated in December 2019). Eligible trials employed randomized controlled trials (RCTs), before/after studies, and interrupted time series design comparing HIVST to standard HIV testing services or comparing different approaches to HIVST among adults living in Africa were systematically sought.ResultsAfter searching 2,617 citations eleven trials were identified including 59,119 participants from four (4) African countries. Meta-analysis of seven trials showed a significant increase in the uptake of HIVST compared to standard HIV testing services: Both fixed-effects (Rate Ratio (RR) = 2.64, 95% CI: 2.51 to 2.79), and random-effects (RR) = 3.10, 95% CI: 1.80 to 5.37, and a significant increase in the uptake of couples’ HIVST (RR = 2.50, 95% CI: 2.29 to 2.73 in fixed-effects models; and RR = 2.64, 95% CI: 2.01 to 3.49 in random-effects model). A decrease in linkage to care and ART was observed in HIVST compared to standard HIV testing services (RR = 0.88, 95% CI: 0.88 to 0.95 in fixed-effects models; and RR = 0.78, 95% CI: 0. 56 to 1.08 in random-effects models). Six RCTs measured social harms, with a total of ten reported cases related to HIVST. One RCT comparing two approaches to HIVST showed that offering home-based HIVST with optional home-initiation of antiretroviral treatment increased the reporting of a positive HIV test result (RR: 1.86; 95% CI: 1.16 to 2.98), and linkage to antiretroviral treatment (RR: 2.94; 95% CI: 2.10 to 4.12), compared with facility-based linkage to antiretroviral treatment.ConclusionsHIVST has the potential to increase the uptake of HIV testing compared to standard HIV testing services. Offering HIVST with optional home initiation of HIV care compared to HIVST with facility-based HIV care increases HIV positivity and linkage to antiretroviral treatment. Reported incidences of intimate partner violence related to HIVST were rare. Future research should focus on the potential of HIVST to reach first-time testers, the effect of using different approaches to HIVST, and strategies for linkage to HIV services.Systematic review registrationThis systematic review was prospectively registered on the Prospero International Prospective Register of Systematic Review (CRD42015023935).

Trends and predictors of HIV positivity and time since last test at voluntary counselling and testing encounters among adults in Kilifi, Kenya, 2006-2017

Background: Little is known about HIV retesting uptake among key populations (KP) and general populations (GP) in Kenya. We assessed trends and predictors of first-time testing (FTT), late retesting (previous test more than one year ago for GP or three months for KP), and test positivity at three voluntary counselling and testing (VCT) centres in coastal Kenya. Methods: Routine VCT data covering 2006-2017 was collected from three VCT centres in Kilifi County. We analysed HIV testing history and test results from encounters among adults 18-39 years, categorized as GP men, GP women, men who have sex with men (MSM), and female sex workers (FSW). Results: Based on 24,728 test encounters (32% FTT), we observed declines in HIV positivity (proportion of encounters where the result was positive) among GP men, GP women, first-time testers and MSM but not among FSW. The proportion of encounters for FTT and late retesting decreased for both GP and KP but remained much higher in KP than GP. HIV positivity was higher at FTT and late retesting encounters; at FSW and MSM encounters; and at encounters with clients reporting lower educational attainment and sexually transmitted infection (STI) symptoms. HIV positivity was lower in GP men, never married clients and those less than 35 years of age. FTT was associated with town, risk group, age 18-24 years, never-married status, low educational attainment, and STI symptoms. Late retesting was less common among encounters with GP individuals who were never married, had Muslim or no religious affiliation, had lower educational attainment, or reported STI symptoms. Conclusions: HIV positive test results were most common at encounters with first-time testers and late re-testers. While the proportion of encounters at which late retesting was reported decreased steadily over the period reviewed, efforts are needed to increase retesting among the most at-risk populations.

Positivity yield of HIV index testing services from selected healthcare facilities in Ondo State, southwest Nigeria

Background: Index testing is a voluntary process whereby HIV seropositive clients are counselled and, after obtaining consent, their sexual and needle sharing partners are offered HIV testing services. Index testing has been associated with high HIV positivity yield. The aim of this study is to determine the positivity yield and identify factors influencing the yield from index testing strategy in selected healthcare facilities in Ondo State, southwest Nigeria.&#x0D; Methodology: Six public hospitals in Ondo State with the highest HIV clients currently on treatment were selected. Records of all clients newly diagnosed to be HIV positive at the selected facilities from June 2018 to September 2019, and who had an outcome for index testing services were reviewed. Data were collected using a chart abstraction template from the index testing registers. Information collected included age and gender of the index clients and their partners, method of referral and notification of partners, HIV test results of partners and linkage status of new HIVpositive partners. Data analyses were done using the Statistical Package for the Social Sciences (SPSS) software version 24.0. Chi-square was used to test association between variables at a significance level of p&lt;0.01.&#x0D; Results: The records of a total of 904 index clients and their partners were reviewed with partner elicitation ratio of 1:1. The mean ages of index clients and their partners were 38.52±10.96 and 38.98±10.79 years respectively, and majority of the index clients (34.6%) and partners (35.5%) were in the 35-44 years age group. A total of 548 index clients were females (60.6%) while 528 of their partners were males (58.4%), indicating predominantly heterosexual (96.4%) and few homosexual (lesbian) relationships (3.6%). One-fifth (20%) of partners tested positive for HIV andwere all (100%) linked to antiretroviral therapy (ART). The HIV positivity rate in partners of male index clients (26.9%) was significantly higher than in partners of female index clients (15.5%) (p&lt;0.01). Partner referral method was mostly through assisted referral (56%) and most (82%) were contacted by the index clients through phone.&#x0D; Conclusion: Due to its high positivity yield, index testing is a veritable strategy to increase HIV case detection and linkage to ART. Hence, proper deployment of index testing will be critical to improving ART coverage and achieving epidemiological control.&#x0D; Keywords: HIV, client; partner; index testing; ART; southwest Nigeria

HIV false positive screening serology due to sample contamination reduced by a dedicated sample and platform in a high prevalence environment.

Automated testing of HIV serology on clinical chemistry analysers has become common. High sample throughput, high HIV prevalence and instrument design could all contribute to sample cross-contamination by microscopic droplet carry-over from seropositive samples to seronegative samples resulting in false positive low-reactive results. Following installation of an automated shared platform at our public health laboratory, we noted an increase in low reactive and false positive results. Subsequently, we investigated HIV serology screening test results for a period of 21 months. Of 485 initially low positive or equivocal samples 411 (85%) tested negative when retested using an independently collected sample. As creatinine is commonly requested with HIV screening, we used it as a proxy for concomitant clinical chemistry testing, indicating that a sample had likely been tested on a shared high-throughput instrument. The contamination risk was stratified between samples passing the clinical chemistry module first versus samples bypassing it. The odds ratio for a false positive HIV serology result was 4.1 (95% CI: 1.69-9.97) when creatinine level was determined first, versus not, on the same sample, suggesting contamination on the chemistry analyser. We subsequently issued a notice to obtain dedicated samples for HIV serology and added a suffix to the specimen identifier which restricted testing to a dedicated instrument. Low positive and false positive rates were determined before and after these interventions. Based on measured rates in low positive samples we estimate that before the intervention, of 44 117 HIV screening serology samples, 753 (1.71%) were false positive, declining to 48 of 7 072 samples (0.68%) post-intervention (p<0.01). Our findings showed that automated high throughput shared diagnostic platforms are at risk of generating false-positive HIV test results, due to sample contamination and that measures are required to address this. Restricting HIV serology samples to a dedicated platform resolved this problem.

Determinants of HIV testing uptake among partners of pregnant women in Addis Ababa, Ethiopia: a community-based study.

Introductioncouples HIV testing and counseling is an important intervention to make an informed decision on reproductive health, to adopt preventive behaviors, support each other, and prevent mother-to-child HIV transmissions. Despite the importance of partners of pregnant women HIV testing uptake, there is limited study in Ethiopia. Hence, this study aimed to assess the proportion of HIV testing uptake and its determinants among partners of pregnant women.Methodsa community-based cross-sectional study was conducted from January to February 2020 in Addis Ababa. A multistage cluster sampling technique was used to recruit 812 partners of pregnant women. A pre-tested and structured questionnaire was used to collect the data. Binary logistic regression analysis was performed to identify the determinants of HIV testing uptake among partners of pregnant women. Adjusted odds ratio with 95% confidence interval was used to declare statistical association and the direction of the association between the dependent variable and independent variables.Resultsoverall, a total of 63.7% (95% CI: 60-67%) of partners of pregnant women were tested for HIV/AIDS. Knowledge on mother to child transmission of HIV (AOR=2.0, 95% CI: 1.37-3.06), previous history of couple HIV testing and counseling (AOR=3.8, 95% CI: 2.49-5.85), discussion with spouse (AOR= 6.6, 95% CI: 4.44-9.91), and having information about discordant HIV test result (AOR =2.3, 95% CI: 1.48-4.14) were significantly associated with partners of pregnant women HIV test uptake.ConclusionHIV testing uptake among partners of pregnant women was low. To increase the uptake of HIV testing, program designers and implementors should work on knowledge of the spouse´s on mother to child transition of HIV, to have more discussion between couples, and consider and strengthen activities that increase couple HIV testing and counseling at the community level before pregnancy.

Risk assessment for HIV infection in men who have sex with men and the contribution of sexual partner networks.

This study aimed to evaluate the risk of HIV infection in men who have sex with men (MSM) by developing an index that considers sex partner networks. The index variables were age, ethnicity/skin color, schooling, relationship type, condom use in receptive and insertive relationships, self-perception of the possibility of HIV infection, sexually transmitted infections, and rapid HIV testing results. We used data from a cross-sectional MSM egocentric network survey conducted in Rio de Janeiro between 2014 and 2015. The initial research volunteer is called ego, each partner is called alter, and each pair of people in a relationship is called the dyad. Multiple logistic regression was used to define the coefficients of the equations for the elaboration of the indices. The index ranged from 0 to 1; the closer to 1, the higher the risk of HIV infection. HIV prevalence was 13.9% among egos. The mean egos index with an HIV-reactive test was 57% higher than non-reactive, and the same profile was observed in the index values of dyads. The index allowed the incorporation of network data through the dyads and contributed to the identification of individuals with a higher likelihood of acquiring HIV.

Determinants of Mixed Infant Feeding Practice Among HIV Positive Mothers Attending PMTCT and ART Services in Southern Ethiopia: A Case-control Study

<i>Background and aim</i>: Infant feeding practices recommended to mothers known to be living with HIV should support the greatest likelihood of the HIV-free survival of their children and not harm the health of mothers. HIV positive women are confused about feeding methods and mixed feeding continued to be widespread. The determinant of infant mixed feeding practice among HIV positive mothers is not well studied in Ethiopia. The aim of the study is to assess the determinants of mixed infant feeding practice among HIV Positive Mothers in Southern Ethiopia. <i>Methods</i>: Unmatched case-control study was conducted among HIV positive mothers at selected ART centers of Southern Ethiopia. A total of 276 mothers children pair; 92 cases and 184 controls, were enrolled in the study. An interviewer-administered questionnaire was used to collect data and EPI info version 3.5.3 statistical software used to enter data and analysis was done using SPSS version 20software. Bivariate and multivariate logistic regression was carried out to identify the determinants of mixed feeding practice of HIV positive mothers. <i>Result</i>: Determinants which are significantly associated with mixed infant feeding practice of HIV positive mothers were: Age group 15-35years (AOR=3.90; 95% CI: 1.59-9.56); Home delivered mothers (AOR=8.79; 95% CI: 3.08, 25.10); HIV diagnosed five and above years ago (AOR=1.85; 95% CI: 1.02-3.39) and WHO Clinical stage I (AOR=2.47; 95% CI: 1.23, 4.94). <i>Conclusion</i>: The study concludes that, age of the mother, place of delivery, duration since mother HIV diagnosed, and WHO clinical stage of the mother was identified as determining factors of mixed infant feeding practice. There is a positive relationship between HIV test results of infants and mixed feeding practice of HIV positive mothers. An integrated infant feeding counseling with a practical demonstration is needed to foster HIV positive mother’s practice on infant feeding options. Moreover, enhancement of health facility delivery, HIV care service through the implementation of new WHO Infant feeding global guidelines was critically mandatory for the HIV free survival of children.

HIV Testing and Receiving Test Results by the Female Sex Workers; Retrospective Study using Data from Sri Lanka National HIV Prevention Programme

<strong>Introduction: </strong>Improving HIV testing among Key Populations (populations at high risk) is the first step to achieve 90:90:90 treatment targets. Studying the time taken to HIV testing and subsequent clinic visits to uptake the test results provide important inputs for development of HIV prevention programmes. <strong> </strong> <strong>Objectives: </strong>This study aims to understand the pattern of HIV testing behavior of Female Sex Workers (FSWs) over the time and provide recommendations for development of HIV prevention programmes for FSWs <strong> </strong> <strong>Methods: </strong>HIV testing data of 5,667 FSWs registered with national HIV prevention programme in 10 Districts of Sri Lanka during 2016 and 2017 were analyzed using, survival data analysis techniques and extended Prentice, Williams &amp; Peterson (PWP) gap time model. <strong> </strong> <strong>Results: </strong>Time taken to acceptance of HIV test is more dependent on individual factors of FSWs whereas uptake of test result is less dependent on individual factors. Youth FSWs take more time to accept an HIV test. FSWs who are operating in Districts out of Colombo, use condoms, reported undergone HIV testing before join the programme, take more time for HIV testing and uptake test results. FSWs with high partner exchange rate (therefore at high risk) are less likely to complete both events and take more time for testing. Interaction between FSW typology and condom use was found with the use of PWP model. <strong> </strong> <strong>Conclusion: </strong>High risk FSWs are more reluctant for HIV testing and uptake of test results. Factors identified in the study as associated with time taken for both events can be taken into account in planning future HIV preventions programs among FSWs.

Receipt of infant HIV DNA PCR test results is associated with a reduction in retention of HIV-exposed infants in integrated HIV care and healthcare services: a quantitative sub-study nested within a cluster randomised trial in rural Malawi

BackgroundRetention of HIV-infected mothers in integrated HIV and healthcare facilities is effective at reducing mother-to-child-transmission (MTCT) of HIV. In the context of Option B+, we examined maternal and HIV-exposed infant retention across three study arms to 18 months postpartum: mother-and-infant clinics (MIP), MIP with short-messaging service (MIP + SMS) and standard of care (SOC). In particular, we focused on the impact of mothers receiving an infant’s HIV PCR test result on maternal and infant study retention.MethodsA quantitative sub-study nested within a cluster randomised trial undertaken between May 2013 and August 2016 across 30 healthcare facilities in rural Malawi enrolling HIV-infected pregnant mothers and HIV-exposed infants on delivery, was performed. Survival probabilities of maternal and HIV-exposed infant study retention was estimated using Kaplan-Meier curves. Associations between mother’s receiving an infant’s HIV test result and in particular, an infant’s HIV-positive result on maternal and infant study retention were modelled using time-varying multivariate Cox regression.ResultsFour hundred sixty-one, 493, and 396 HIV-infected women and 386, 399, and 300 HIV-exposed infants were enrolled across study arms; MIP, MIP + SMS and SOC, respectively. A total of 47.5% of mothers received their infant’s HIV test results < 5 months postpartum. Receiving an infant’s HIV result by mothers was associated with a 70% increase in infant non-retention in the study compared with not receiving an infant’s result (HR = 1.70; P-value< 0.001). Receiving a HIV-positive result was associated with 3.12 times reduced infant retention compared with a HIV-negative result (P-value< 0.001). Of the infants with a HIV-negative test result, 87% were breastfed at their final study follow-up.ConclusionsReceiving an infant’s HIV test result was a driving factor for reduced infant study retention, especially an infant’s HIV-positive test result. As most HIV-negative infants were still breastfed at their last follow-up, this indicates a large proportion of HIV-exposed infants were potentially at future risk of MTCT of HIV via breastfeeding but were unlikely to undergo follow-up HIV testing after breastfeeding cessation. Future studies to identify and address underlying factors associated with infant HIV testing and reduced infant retention could potentially improve infant retention in HIV/healthcare facilities.Trial registrationPan African Clinical Trial Registry: PACTR201312000678196.