Voluntary counseling, testing, and referral for HIV: new technologies, research findings create dynamic opportunities

Programs for voluntary counseling and testing (VCT) for HIV play an increasingly important role in comprehensive prevention and care strategies. New technological advancements and behavioral interventions can improve the effectiveness of VCT as a tool for preventing new HIV infections and helping HIV-positive individuals access appropriate care. With growing consensus that early access to HIV therapy increases its effectiveness, and that individuals diagnosed with HIV reduce risk behavior, VCT has become integral to the continuum of HIV primary care. However, federal funding of VCT has declined, with concomitant decreases in numbers of people being tested. An estimated 200,000 people in the United States remain unaware that they are HIV positive, and many at-risk individuals do not seek out standard HIV counseling and testing services. To increase the acceptability and effectiveness of VCT, the authors recommend that VCT programs employ outreach programs offering anonymous testing to reach those at heightened risk of HIV infection, and to make rapid use of new technologies and counseling strategies to improve the reach and efficacy. Given the important role that VCT can play in both prevention and early treatment, the authors recommend significant increases in federal support.     

The role for government health centers in provision of same-day voluntary HIV counseling and testing in Kenya

OBJECTIVE: To explore the role of primary health centers in provision of voluntary counseling and testing (VCT) in Kenya. DESIGN AND SETTING: Prospective service evaluation at 3 (1 urban and 2 rural) government health centers. SUBJECTS: Consecutive adult clients. MAIN OUTCOME MEASURES: Uptake of services, user characteristics, quality of service. RESULTS: Counseling services received 2315 new clients over 26 months. The last quarter averaged 101 clients per clinic. More than 80% of clients lived locally. Overall 93% opted to test, 91% receiving results, 82% on the same day. Most clients tested HIV negative (81%). Youth and men were well represented. Few couples (10%) attended. Seventeen percent of women were pregnant. Self-referral was common and illness was an uncommon reason for testing (<20%). Thirty-one percent of clients were referred from VCT to other health center services. Counseling was perceived as high quality by users and providers. Validation of the test algorithm showed a sensitivity of 98.0% and specificity of 98.7%. CONCLUSION: Government health centers in Kenya can be appropriate providers of VCT. This pilot helped initiate a new strategy of health center-based VCT in Kenya and this has facilitated rapid expansion and more equitable provision for Kenyans.     

Profiles of HIV voluntary counseling and testing of clients at a district hospital,Chiang Mai Province,northern Thailand,from 1995 to 1999

Voluntary HIV counseling and testing (VCT) is a central component of comprehensive HIV prevention strategies targeting individual risk reduction. VCT data are essential for planning and improving HIV/AIDS intervention strategies. The objective of this study is to describe demographic profiles, reasons for seeking HIV counseling and testing, rate of declining HIV testing after pretest counseling, rate of failure to return for HIV test results, and HIV prevalence and associations among 3570 clients who sought VCT at Sansai Hospital in northern Thailand from 1995 to 1999. Data were abstracted retrospectively from client-level data recorded by the hospital counselors on a standard form. HIV prevalence was 29% and remained high throughout the study period. Reasons for seeking VCT for men and women were markedly different and highly correlated with rates of declining the test, failure to return for test results, and HIV prevalence. Declining VCT and failing to return were high among uneducated clients (p <.001). Failure to return among men was associated with HIV prevalence (OR = 1.72, p =.003), particularly for those who had risk behaviors (OR = 5.92, p <.001) and those who wanted to know their HIV serostatus (OR = 4.44, p =.002). Overall, VCT acceptance and returning for test results were high. VCT services at the community level can reach high-risk individuals, especially male partners of women tested as part of routine prenatal care.     

Botswana's Tebelopele voluntary HIV counseling and testing network: use and client risk factors for HIV infection, 2000-2004

BACKGROUND:: HIV services, including voluntary counseling and testing (VCT) and antiretroviral (ARV) therapy, expanded rapidly in Botswana from 2000 through 2004. METHODS:: Client data from Botswana's Tebelopele VCT network were analyzed to describe clients, factors associated with HIV infection, and trends in VCT use. RESULTS:: Tebelopele provided free, anonymous, same-day HIV tests for 117,234 clients from 2000 through 2004. Before ARV therapy was available, 8.3% of clients sought a test because of illness, and 26.3% were HIV-positive. After ARV therapy became available, 20.1% of clients sought a test because of illness, and 38.8% were HIV-positive. Most VCT clients (82.7%) were unmarried; 89.8% reported no or 1 sexual partner in the last 3 months; and 50.2% of unmarried clients reported always using condoms in the last 3 months. In multivariate analysis, higher educational level, marriage, and always using condoms were associated with a lower risk of HIV. Having only 1 recent sexual partner was associated with less condom use and a higher risk of being HIV-positive for men. CONCLUSIONS:: VCT has been well accepted in Botswana. Analysis of this data set supports efforts to promote 100% condom use and to emphasize that partner reduction must be combined with condom use and HIV testing to protect against HIV.     

Voluntary HIV counseling and testing: experience among the sexually active population in Bangui,Central African Republic

OBJECTIVES: In July 1997, the National Reference Center for Sexually Transmitted Diseases of Bangui, Central African Republic (CAR), was expanded by the creation of an anonymous and voluntary counseling and testing (VCT) unit for HIV infection, the Anonymous Surveillance Unit (Unité de Dépistage Anonyme [UDA]). The goal of the UDA was to initiate and promote voluntary HIV testing in the general adult population of Bangui. We carried out an observational and comprehensive survey over a 4-year period to document and analyze the experience of VCT in the UDA, with special attention to risk factors associated with HIV infection. METHODS: All clients for VCT were given adequate pretest counseling by trained counselors focused on knowledge about HIV infection and sexually transmitted infections, individual risks of acquiring HIV, and anticipation of the client's attitude about test results. After consent was obtained, a blood sample was drawn and tested for HIV by two ELISAs in parallel. The client paid a standard cost of $1.20 at the initial visit. After a week, test results were given to the client during the posttest visit, at which time HIV-seropositive individuals received emotional support and were referred to specific social or medical structures. Seronegative clients received reinforcement of prevention messages and were asked to come back for serologic follow-up free of charge after 3 (M3) and 12 (M12) months. RESULTS: From July 1997 to March 2001, 5686 individuals aged 14 to 65 years (mean age, 27 years) had an initial visit for VCT (V1). Peaks of UDA visitation (250-450 clients) were observed on the annual AIDS Day in the CAR, at which time HIV serologic testing was offered free of charge. A total of 5060 (89%) clients came back for a second visit (V2) to receive test results. Among those, 18.3% were infected with HIV type 1. Multivariate analysis of risk factors demonstrated marked association of HIV seropositivity with age, female gender, widowed/divorced women, poor or low education level, occupations such as civil servants or merchants, presence of symptoms of sexually transmitted infections, and lack of systematic condom use. Single young women were at higher risk for HIV infection compared with men of the same age (OR = 7.7 for women aged 15-24 years, 95% CI: 4.0-14.0; OR = 2.8 for women aged 25-34 years, 95% CI: 1.7-4.5). Widowed women older than 44 years of age were more likely to be HIV-seropositive than men (OR = 10.0; 95% CI: 1.7-83.6). A total of 885 (21%) HIV-seronegative individuals returned for follow-up at 3 months (M3; 0.45% rate of seroconversion). Seventy-nine (9%) individuals returned at 12 months (M12), without any new cases of HIV infection. HIV-negative clients consulting at M3 and M12 showed a significant reduction in unprotected intercourse with occasional sexual partners. CONCLUSION: This experience demonstrates that VCT for HIV infection is feasible in Central Africa.     

2008-2010年深圳市艾滋病自愿咨询检测结果比较分析

目的调查深圳市艾滋病自愿咨询检测（VCT）人群的社会人口学特征和感染状况,为制定预防措施提供依据。方法对2008-2010年深圳市VCT人群的调查结果进行比较分析。结果 44239名求询者接受了咨询和血清HIV抗体检测,以20～40岁青壮年为主,占82.4%;男女比例为0.89∶1,文化程度以初、高中或中专为主,占62.6%;咨询类型主要为危险性行为28948例,占65.4%;HIV阳性428例,阳性率为0.97%。2008-2010年男男性行为（MSM）感染率分别为9.2%、9.8%和14.6%。结论深圳市MSM感染率逐年升高,应加强对MSM人群的行为干预,并对高危人群进行艾滋病宣传教育。     

Undiagnosed HIV infection and couple HIV discordance among household members of HIV-infected people receiving antiretroviral therapy in Uganda

INTRODUCTION: Systematic efforts to identify HIV-infected members and HIV-discordant couples in households of individuals taking antiretroviral therapy (ART) could theoretically reduce HIV transmission and improve ART adherence. METHODS: We enrolled HIV-infected clients of an AIDS support organization in a randomized evaluation of different ART monitoring regimens that offered home-based ART care to them and their clinically eligible household members. At baseline, counselors visited participants' homes and offered voluntary counseling and testing (VCT) to all household members. We assessed uptake, HIV prevalence, HIV discordance, and rate of ART eligibility. RESULTS: Of the 2373 household members, 2348 (99%) accepted VCT. HIV prevalence among household members was 7.5% and varied by age with 9.5% among children aged 0 to 5 years, 2.9% among persons aged 6 to 24 years, and 37.1% among adults aged 25 to 44 years. Of the household members with HIV, 74% had never been previously tested, and 39% of these were clinically eligible for ART. Of the 120 spouses of ART patients that were tested for HIV, 52 (43%) were HIV negative, and of these, 99% had not been previously tested. CONCLUSIONS: Provision of home-based VCT to household members of people initiating ART was well accepted and resulted in the detection of a large number of previously undiagnosed HIV infections and HIV-discordant relationships.     

The year-long effect of HIV-positive test results on pregnancy intentions, contraceptive use, and pregnancy incidence among Malawian women

OBJECTIVES: To estimate the effect of receiving HIV-positive test results on intentions to have future children and on contraceptive use and to assess the association between pregnancy intentions and pregnancy incidence among HIV-positive women in Malawi. METHODS: Women of unknown HIV status completed a questionnaire about pregnancy intentions and contraceptive use and then received HIV voluntary counseling and testing (VCT). Women who were HIV-positive and not pregnant were enrolled and followed for 1 year while receiving HIV care and access to family planning (FP) services. RESULTS: Before receiving their HIV test results, 33% of women reported a desire to have future children; this declined to 15% 1 week later (P < 0.0001) and remained constant throughout follow-up. Contraceptive use increased from 38% before HIV testing to 52% 1 week later (P < 0.0001) and then decreased to 46% by 12 months. The pregnancy incidence among women not reporting a desire to have future children after VCT was less than half of the incidence among women reporting this desire. CONCLUSIONS: With knowledge of their HIV-positive status, women were less likely to desire future pregnancies. Pregnancy incidence was lower among women not desiring future children. Integration of VCT, FP, and HIV care could prevent mother-to-child HIV transmission.     

The evolving role of HIV counseling and testing in resource-limited settings: HIV prevention and linkage to expanding HIV care access

The role of voluntary counseling and testing (VCT)of HIV in resource-limited settings has recently broadened from primarily that of a prevention intervention to its identification as the key entry point into expanding access to life-saving antiretroviral therapy, additional HIV-specific medical care, and other support services. To fulfill this expanded mandate, calls for routine counseling and testing in diverse health care settings, in addition to other innovative approaches to traditional VCT, are emerging. The efficacy and cost-effectiveness of traditional facility-based VCT with respect to risk-behavior reduction of HIV have been demonstrated rigorously in resource-limited settings. Additional research is needed urgently to evaluate the feasibility, acceptability, and effectiveness of streamlined counseling and testing interventions that seek to reach as many individuals as possible to meet dual prevention and treatment goals.     

Using HIV voluntary counseling and testing data for monitoring the Uganda HIV epidemic, 1992-2000

OBJECTIVE: To assess trends in the prevalence of HIV infection among voluntary counseling and testing (VCT) clients in Uganda and to describe the utility of VCT data for monitoring the HIV epidemic in 1992-2000. METHODS: We analyzed routinely collected data from first-time VCT clients not reporting illness as a reason for testing. We developed a model adjusting for test site, couple testing, and premarital testing, assessed trends in adjusted prevalence of HIV infection and shifts in age-specific peak prevalence, and compared antenatal clinic (ANC) surveillance data and VCT prevalence trends. RESULTS: Among 201,741 clients, adjusted prevalence of HIV infection declined from 23% in 1992 to 13% in 2000 (P < 0.001) (men, 17%-9% [P < 0.001]; women, 31%-18% [P < 0.001]). The prevalence declined for all age groups except men older than 39 years and women older than 34 years. The prevalence increased for women older than 39 years (P < 0.003). Between 1992 and 2000, peak prevalence declined for both men (31% to 24%) and women (44% to 41%), whereas the age at which the peak occurred increased for both men (36 to 41 years) and women (31 to 36 years). VCT and ANC prevalence trends were similar. CONCLUSION: In Uganda, the prevalence of HIV infection among male and female VCT clients declined from 1992 to 2000, similar to ANC surveillance data, but did not decline in older age groups. In regions with well-established VCT programs, VCT data may provide a useful and convenient tool for monitoring the HIV epidemic.     

Routine voluntary HIV testing in Durban, South Africa: the experience from an outpatient department

OBJECTIVE: To evaluate the yield of a routine voluntary HIV testing program compared with traditional provider-referred voluntary counseling and testing (VCT) in a hospital-affiliated outpatient department (OPD) in Durban, South Africa. DESIGN AND METHODS: In a prospective 14-week "standard of care" period, we compared OPD physician logs documenting patient referrals to the hospital VCT site with HIV test registers to measure patient completion of HIV test referral. The standard of care period was followed by a 12-week intervention during which all patients who registered at the OPD were given an educational intervention and offered a rapid HIV test at no charge as part of routine care. RESULTS: During the standard of care period, OPD physicians referred 435 patients aged > or = 18 years for HIV testing; 137 (31.5%) of the referred patients completed testing at the VCT site within 4 weeks. Among those tested, 102 (74.5%) were HIV infected. During the intervention period, 1414 adults accepted HIV testing and 1498 declined. Of those tested, 463 (32.7%, 95% confidence interval: 30.3 to 35.3) were HIV infected. Routine HIV testing in the OPD identified 39 new HIV cases per week compared with 8 new cases per week with standard of care testing based on physician referral to a VCT site (P < 0.0001). CONCLUSIONS: Routine voluntary HIV testing in an OPD in South Africa leads to significantly higher rates of detection of HIV disease. This strategy should be implemented more widely in high HIV prevalence areas where treatment is available.     

2005—2008年广东省CDC艾滋病自愿咨询检测人群特征分析

目的分析广东省疾病预防控制中心（CDC）艾滋病自愿咨询检测（VCT）人群特征,为预防HIV传播提供科学依据。方法对2005年1月至2008年12月来广东省CDC门诊寻求VCT服务的人群进行检测前咨询并填写个案登记表,用描述性方法分析其特征及艾滋病病毒（HIV）抗体检测结果。结果咨询检测者2951人,主要来自于广州市以外地区,初诊者多于复诊者,以20～39岁的青壮年为主,男性多于女性,以已婚者居多;本科文化程度者所占比例较大;职业分布主要以干部职员为主,其次为商业服务人员;咨询检测原因依次为异性性接触、同性性接触、吸毒。共发现HIV抗体阳性者299人,检出率10．1％（x^2=61．27,P〈0．01）。HIV检出率2008年高于2007年,2007、2008年高于2006年,HIV检出率逐年升高。结论广东省CDC门诊VCT高危人群相对集中,主要为青壮年男性,来自外市区,已婚者,受教育水平高,有一定社会地位,咨询的主要原因为异性性接触。VCT能早期发现HIV感染者,2005—2008年HIV阳性检出率逐年升高,建议加强VCT建设,根据人群特征制定防治措施,更有助于提高艾滋病预防效果。     

Knowledge of HIV/AIDS and attitude towards voluntary counseling and testing among adults

BACKGROUND: Nigeria has the third highest population of people living with human immunodeficiency virus (HIV). Despite this, the knowledge of HIV/AIDS and uptake of voluntary counseling and testing (VCT) is still low, especially in the rural areas. This study assessed knowledge of HIV/AIDS and attitude towards VCT among adults in a rural community in northern Nigeria. METHODS: A pretested questionnaire was administered on a cross-section of 210 adults in Danbare village, northern Nigeria. Information about knowledge of HIV/AIDS and attitudes toward VCT was elicited among respondents. RESULTS: The majority of respondents (59%) did not know the causative agent of AIDS; however, knowledge of route of disease transmission was high, with 71% and 64% of study participants mentioning sexual activity and unscreened blood transfusion, respectively, as possible transmission routes. Respondents listed avoidance of premarital sex, outlawing prostitution, condom use and screening of blood before transfusion as protective measures. Overall, 58 (27.6%), 80 (38.1%) and 72 (34.3%) of the respondents had good, fair and poor knowledge of HIV/AIDS, respectively. After adjusting for confounders, female gender and formal education remained significant predictors of HIV/AIDS knowledge. Reasons for rejection of VCT included fear of stigma, marital disharmony, incurable nature of the disease and cost of treatment. Formal education, female gender and HIV knowledge significantly predicted positive attitude toward VCT for HIV/AIDS among the study population. CONCLUSION: More than half of the respondents had adequate knowledge of HIV/AIDS, and the majority were willing to have VCT. However, misconceptions, fear, gaps in knowledge and limited access to VCT remain prevalent. Our findings suggest the need to provide health education and scale up VCT services in northern Nigeria by targeting the efforts of international and local development partners to underserved rural areas.     

Estimating HIV incidence in voluntary counseling and testing clients in Uganda (1992-2003)

OBJECTIVES: To estimate HIV incidence from first-time testers among voluntary counseling and testing (VCT) clients in Uganda. METHODS: Data on 203,000 VCT clients tested from 1992 through 2003 were adjusted for temporal changes in the testing population. Differential mortality rates by HIV status were used to derive expected prevalence at future times from baseline prevalence within 5-year birth cohorts. Incidence was computed as the proportion of HIV-uninfected persons who seroconverted divided by the proportion negative at baseline. RESULTS: Annual HIV incidence per 100 uninfected persons increased from 0.9 (95% confidence interval [CI]: 0.8 to 1.1) in 1993 to 2.3 (95% CI: 2.2 to 2.5) in 2003 (chi test for trend, P < 0.001). Prevalence decreased from 23% to 13% in 1999 to 2000 and increased to 15% in 2003. Women had a higher incidence. Peak incidence shifted to older age groups over time. CONCLUSIONS: Estimating incidence from routine data presents a practical way of tracking HIV incidence and is a useful tool in targeting and evaluating the impact of prevention programs. Our analysis reveals a new phase of the HIV epidemic in Uganda: decreasing prevalence and increasing incidence, especially among middle-aged persons. These findings support the need for intensified prevention interventions among middle-aged persons in Uganda.     

Correlates of HIV infection among people visiting public HIV counseling and testing clinics in Mpumalanga, South Africa

Background

HIV voluntary counselling and testing (VCT) reduces high-risk sexual behaviour. Factors associated with HIV infection in VCT clients have not been well characterized in South Africa.

Objectives

A case-control study was carried out to determine the association between socio-demographic and HIV risk variables and HIV infection among people visiting HIV counseling and testing centers in two districts in Mpumalanga province, South Africa. Cases (n=1093) and controls (n=1162) were compared by socio-demographics, exposure to substances, and risky behaviours that predispose them to HIV infection.

Results

In multivariable analysis, having children, having been diagnosed with a a sexually transmitted infection (STI) in the past three months, not having had oral sex in the past three months, lack of condom use consistency in the past three months, and lack of HIV behavioural skills enactments were significantly associated with HIV positive status.

Conclusion

HIV risk behaviour was found to be a significant risk factor for HIV infection in the study population. There is urgent need for health education to bring about behavioural changes to reduce HIV infection in the community.     

Provider-initiated HIV testing in rural Haiti: low rate of missed opportunities for diagnosis of HIV in a primary care clinic

As HIV treatment is scaled-up in resource-poor settings, the timely identification of persons with HIV infection remains an important challenge. Most people with HIV are unaware of their status, and those who are often present late in the course of their illness. Free-standing voluntary counseling and testing sites often have poor uptake of testing. We aimed to evaluate a 'provider-initiated' HIV testing strategy in a primary care clinic in rural resource-poor Haiti by reviewing the number of visits made to clinic before an HIV test was performed in those who were ultimately found to have HIV infection. In collaboration with the Haitian Ministry of Health, a non-governmental organization (Partners In Health) scaled up HIV care in central Haiti by reinforcing primary care clinics, instituting provider-initiated HIV testing and by providing HIV treatment in the context of primary medical care, free of charge to patients. Among a cohort of people with HIV infection, we assessed retrospectively for delays in or 'missed opportunities' for diagnosis of HIV by the providers in one clinic. Of the first 117 patients diagnosed with HIV in one clinic, 100 (85%) were diagnosed at the first medical encounter. Median delay in diagnosis for the remaining 17 was only 62 days (IQR 19 – 122; range 1 – 272). There was no statistical difference in CD4 cell count between those with and without a delay. 3787 HIV tests were performed in the period reviewed. Provider-initiated testing was associated with high volume uptake of HIV testing and minimal delay between first medical encounter and diagnosis of HIV infection. In scale up of HIV care, provider-initiated HIV testing at primary care clinics can be a successful strategy to identify patients with HIV infection.     

HIV risk perception and prevalence in a program for prevention of mother-to-child HIV transmission: comparison of women who accept voluntary counseling and testing and those tested anonymously

OBJECTIVE: To determine whether data from voluntary counseling and testing (VCT)/prevention of mother-to-child transmission (PMTCT) programs can be used for HIV surveillance. METHODS: Women attending an antenatal clinic at the district hospital in Entebbe, Uganda, from May 2002 to April 2003 were offered counseling and HIV testing with same-day results (VCT) and nevirapine for PMTCT was provided for HIV-positive women and their babies. Those who declined VCT were tested for HIV anonymously. RESULTS: Overall, 2635 women accepted VCT; 883 were tested anonymously. HIV prevalence was higher in VCT than in anonymously tested women in the first month of the program (20% vs. 11%, P=0.05) and in months with <70% VCT uptake (17% vs. 8%, P<0.001) but was similar in months with high uptake. Uptake of VCT was higher in women who had risk factors for HIV, especially those who believed themselves to have been exposed (84% vs. 73%, P<0.001). CONCLUSION: There was a bias to accepting VCT in women with HIV, or risk factors for HIV infection, the former most apparent when there was low coverage. Data from VCT/PMTCT programs cannot replace anonymous surveillance for monitoring of HIV epidemic trends where coverage is incomplete within clinics or communities.     

2014-2015年天津市主动求询者HIV感染状况及影响因素分析

目的 了解天津市艾滋病自愿咨询检测门诊主动求询者的HIV感染状况及其影响因素.方法 对2014-2015年天津市艾滋病自愿咨询检测门诊主动求询者的问卷调查资料和实验室检测结果进行统计,采用SPSS 21.0对数据进行统计学分析.结果 门诊累计为24 249人提供了HIV咨询检测服务,咨询者以20-39岁为主,男女比例1.8∶1,男性HIV检出率明显高于女性.HIV阳性检出率2.0％(473/24249),梅毒阳性检出率4.6％(1119/24249).HIV检出阳性最多的是男男性行为者、有商业异性性行为史者、有非商业非固定异性性行为史者,构成比分别为51.6％(244/473)、18.8％(89/473)、13.1％(62/473).多因素分析显示,年龄、性别、文化程度、既往检测、梅毒结果和求询原因是调查对象HIV感染的影响因素.结论 应该在艾滋病高风险人群,尤其是男男同性性行为人群中加强健康教育和行为干预,开展更便利的VCT服务模式,促进高危人群主动检测.