India's response to the HIV epidemic

Strengthening India’s Response to HIV/AIDS Epidemic Through Strategic Planning, Innovative Financing, and Mathematical Modeling: Key Achievements over the Last 3 Decades

Indian HIV/AIDS numbers during the 2000s did not reach the high proportion of estimations provided by the WHO and UNAIDS. The number of HIV infections was high around 2.4 million in the 2020s, but given the country’s population of 1.38 billion, the general positivity rate remained very low compared with several countries. There were several reasons for a successful control of the epidemic in India, for example, setting-up of the National AIDS Control Programs, strategic priorities, surveillance and data management, mathematical modeling, and coordinating with the civil society and galvanizing public response. In this review article, we will provide a recollection of India’s response and management of the HIV/AIDS epidemic, challenges, and successful model building, and future challenges that play important role in sustaining the epidemic at a lower level and plan for reducing the future transmissions.

Research protocol for an epidemiological study on estimating disease burden of pediatric HIV in Belgaum district, India

Background

Pediatric HIV is poised to become a major public health problem in India with the rising trend of HIV infection in pregnant women (Department of AIDS Control, Ministry of Health and Family Welfare, http://www.naco.gov.in). There is lack of information on the epidemiology of pediatric HIV infection in India. Existing surveillance systems tend to underestimate the Pediatric burden. The overall aim of the present study is to estimate the disease burden of pediatric HIV among children in Belgaum district in the state of Karnataka in Southern India. An innovative multipronged epidemiological approach to comb the district is proposed.

Methods

The primary objectives of the study would be attained under three strategies. A prospective cohort design for objective (i) to determine the incidence rate of HIV by early case detection in infants and toddlers (0–18 months) born to HIV infected pregnant women; and cross sectional design for objectives (ii) to determine the prevalence of HIV infection in children (0–14 years) of HIV infected parents and (iii) to determine the prevalence of HIV in sick children (0–14 years) presenting with suspected signs and symptoms using age specific criteria for screening. Burden of pediatric HIV will be calculated as a product of cases detected in each strategy multiplied by a net inflation factor for each strategy.

Study participants (i) (ii) (iii): HIV infected pregnant women and their live born children (ii) Any HIV-infected man/woman, of age 18–49 years, having a biological child of age 0–14 years (iii) Sick children of age 0–14 years presenting with suspected signs and symptoms and satisfying age-specific criteria for screening. Setting and conduct: Belgaum district which is a Category ‘A’ district (with more than 1 % antenatal prevalence in the district over the last 3 years before the study). Age-appropriate testing is used to detect HIV infection.

Discussion

There is a need to strengthen existing pediatric HIV estimation methods in India and other developing countries. We hope that the novel methodology emanating from this study would be applicable for estimating the burden of HIV in other settings and it would be adaptable for estimating the burden of other infectious/chronic diseases. Findings from this study will give future direction to the national program for prevention and control of HIV in India and other developing countries.

Electronic supplementary material

The online version of this article (doi:10.1186/s12889-016-3132-8) contains supplementary material, which is available to authorized users.

Prevalence of HIV/AIDS and Prediction of Future Trends in North-west Region of India: A six-year ICTC-based Study

Background:

The study was conducted to analyze previous six-year prevalence data of HIV infection in the Northwest region of India and predict future trends for a couple of years.

Objectives:

The study was conducted to aid SACS and NACO to plan and arrange resources for the future scenario.

Materials and Methods:

All the attendees of ICTC, Jaipur, from January 2002 to December 2007 were included and variables like age, sex, marital status, occupation, place of residence, pattern of risk behavior and HIV serostatus were studied. As per the strategy and policy prescribed by NACO, tests (E/R/S) were performed on the serum samples. Data was collected; compiled and analyzed using standard statistical methods. Future trends of HIV-prevalence in north-west India were anticipated.

Results:

The overall positivity rates among attendees of ICTC, were found to be 12.2% (386/3161), 11.8% (519/4381), 11.1% (649/5867), 13% (908/6983), 14% (1385/9911) and 17.34% (1756/10133) in the years 2002, 2003, 2004, 2005, 2006 and 2007 respectively. Future trends for the next couple of years depict further increase in prevalence without any plateau.

Conclusion:

Epidemiological studies should be carried out in various settings to understand the role and complex relations of innumerable behavioral, social and demographic factors, which will help, interrupt and control the transmission of HIV/ AIDS.

Declining HIV prevalence among women attending antenatal care in Pune, India

A declining prevalence of HIV among young women has been reported by the public sector implementing prevention of mother-to-child transmission (PMTCT) programmes, sentinel surveillance sites and research institutions in India. However, there are no reports evaluating such trends from the private healthcare sector. This study is a retrospective analysis of data collected by PRAYAS as a part of the PMTCT programme at Sane Guruji Hospital (SGH), a secondary care hospital in Pune, India. Women attending the antenatal clinic at SGH were screened for HIV following a group counselling session, with an option to opt out. Between January 2003 and March 2008, the overall HIV prevalence was 111/17 578 (0.6%, 95% CI 0.5-0.7%). The HIV prevalence among antenatal women was 1.1% in 2003 and 0.2% in 2008 (i.e. 82% decline in HIV prevalence over the 5-year period) and the odds ratio (OR) of HIV prevalence declined by 0.24 per year from 2003 to March 2008 (OR=0.76, 95% CI 0.69-0.87; P<0.001). The risk of having HIV infection was significantly higher in women aged ≥ 24 years and those who were uneducated. To our knowledge, this is the first report from any private sector health system in India documenting a declining HIV prevalence among antenatal women. Characterising the risk profile of this small percentage of at-risk women will help in planning prevention strategies.

Examining sex differentials in the uptake and process of HIV testing in three high prevalence districts of India

Sex differentials in the uptake of HIV testing have been reported in a range of settings, however, men's and women's testing patterns are not consistent across these settings, suggesting the need to set sex differentials against gender norms in patient testing behaviour and provider practices. A community-based, cross-sectional survey among 347 people living with HIV in three HIV high prevalence districts of India examined reasons for undergoing an HIV test, location of testing and conditions under which individuals were tested. HIV testing was almost always provider-initiated for men. Men were more likely to be advised to test by a private practitioner and to test in the private sector. Women were more likely to be advised to test by a family member, and to test in the public sector. Men were more likely to receive pre-test information than women, when tested in the private sector. Men were also more likely to receive direct disclosure of their HIV positive status by a health provider, regardless of the sector in which they tested. More women than men were repeatedly tested for HIV, regardless of sector. These sex differentials in the uptake and process of HIV testing are partially explained through differences in public and private sector testing practices. However, they also reflect women's lack of awareness and agency in HIV care seeking and differential treatment by providers. Examining gender dynamics that underpin sex differentials in HIV testing patterns and practices is essential for a realistic assessment of the challenges and implications of scaling-up HIV testing and mainstreaming gender in HIV/AIDS programmes.

Patterns and distribution of HIV among adult men and women in India

Background

While the estimated prevalence of HIV in India experienced a downward revision in 2007, the patterning and distribution of HIV in the population remains unclear. We examined the individual and state-level socioeconomic patterning of individual HIV status among adult men and women in India as well as the patterning of other individual demographic and behavioral determinants of HIV status.

Methodology/Principal Findings

We conducted logistic regression models accounting for the survey design using nationally representative, cross-sectional data on 100,030 women and men from the 2005–2006 India National Family Health survey which, for the first time, provided objective assessments of HIV seroprevalence. Although there was a weak relationship between household wealth and risk of being HIV-positive, there was a clear negative relationship between individual education attainment and risk of being HIV-positive among both men and women. A 1000 Rupee change in the per capita net state domestic product was associated with a 4% and 5% increase in the risk for positive HIV status among men and women, respectively. State-level income inequality was associated with increased risk of HIV for men. Marital status and selected sexual behavior indicators were significant predictors of HIV status among women whereas the age effect was the most dominant predictor of HIV infection among men.

Conclusions/Significance

Although the prevalence of HIV in India is low, the lack of strong wealth patterning in the risk of HIV suggests a more generalized distribution of HIV risk than some of India's high-risk group HIV prevention policies have assumed. The positive association between state economic development and individual risk for HIV is intriguing and requires further scrutiny.

AIDS denial in Asia: dimensions and roots

AIDS denial has long been viewed as the obstacle to forging effective response in many Asian countries. This article examines the dimensions and roots of this phenomenon. It identifies seven types of views, attitudes, or tendencies that can be described as denial, dissent, disagreements, or doubts. Three major factors underlying the AIDS denial are discussed. These are (1) historical impressions that STDs are Western diseases, (2) desire of some Asian leaders to forge Eastern points of view, and (3) long-held negative image towards the peoples or groups who happened to be at the front-line of the population groups exposed to the epidemic. The third factor is the most important source of denial. AIDS denial is not a new and isolated phenomenon but the one shaped by the global and historical institutions. Asian AIDS denial reflects the authoritarian and moralist grievances arising from the perceived deterioration of traditional moral order.

Acceptability of PRO2000 vaginal gel among HIV un-infected women in Pune, India

Acceptability of PRO2000 Gel, a candidate vaginal microbicide, among participants of its Phase I safety study in Pune, India is reported here. Forty-two eligible women were enrolled in a study requiring twice daily intra-vaginal product use for 14 consecutive days between menses. Acceptability was assessed at study exit through structured questionnaires among 41 participants who completed the product use, and five focus group discussions involving 31 study participants. The participants generally liked the product (40/41, 97.2%), especially its colour (40, 97.2%) and consistency (35, 85.3%). Thirty-four participants reported sexual intercourse within one hour of product use, at least once during the study period and sexual pleasure was reported to be better or unaffected among (30, 88.2%) participants. Nearly 70% did not like its smell and mentioned preference for a product that would be unnoticeable to the male partner. Participating women were concerned about privacy in usage and storage of the product. Acceptability of PRO2000 vaginal gel was good, but its smell will have to be improved. Counselling to address women's concerns about privacy and storage will be crucial. Women's preference for unnoticeable product indicates their empowerment and willingness to accept female-controlled options for HIV prevention.

Declining HIV Infection Rates Among Recently Married Primigravid Women in Pune, India

BACKGROUND

A single recent study has suggested a decrease in HIV risk for women attending antenatal clinics (ANCs) in southern India. Yet, some have questioned the validity of the Indian national surveillance data and analyses. Previous studies suggest that the only major HIV risk factor for married Indian women is the risk behavior of their husbands. Therefore, to address concerns about potential selection bias in the analysis of sentinel surveillance data from multiple sites, we estimated the trajectory of HIV transmission rates among recently married, monogamous, primigravid women attending a single large ANC in Pune, India.

METHODS

Participants were self-referred, young, primigravid women from 18 to 27 years of age consenting to HIV screening. Time trends in HIV prevalence over 3.5 years were evaluated by logistic regression adjusted for age. HIV incidence was estimated by dividing the number of HIV-infected mothers by an estimate of exposure person-time, which was an estimate of the average age-specific duration of marriage.

RESULTS

Between August 16, 2002 and February 28, 2006, 30,085 (79.5%) of 37,858 pregnant women consented to HIV screening; 10,982 (36.5%) were primigravid and their age range was from 18 to 27 years. HIV infection risk declined over 3.5 years among primigravid women. An estimated 19,739 person-years (PYs) of exposure yielded an overall HIV incidence rate 1.25/100 PYs (95% confidence interval [CI]: 1.10 to 1.42). Estimated HIV incidence decreased from 2.2/100 PYs (95% CI: 1.6 to 3.0) in 2002 to 2003 to 0.73/100 PYs (95% CI: 0.5 to 1.0) in 2006.

DISCUSSION

HIV infection risk among young primigravid women in Pune seems to have decreased over the past 3.5 years. A decreasing HIV risk among pregnant women in Pune would also decrease the number of HIV-exposed infants. We hypothesize that decreased high-risk sexual behavior among young recently married men is most likely contributing to a decreasing risk to their wives and children in Pune.

Declining HIV Incidence Among Patients Attending Sexually Transmitted Infection Clinics in Pune, India

OBJECTIVE

A recent report suggesting declining HIV transmission rates in southern India has been based on HIV seroprevalence data to estimate HIV incidence. We analyzed HIV incidence rates among 3 cohorts (male, female non-sex worker, female sex worker [FSW]) presenting to sexually transmitted infection (STI) clinics in Pune, India over 10 years.

METHODS

Between 1993 and 2002, consenting HIV-uninfected individuals were enrolled in a prospective study of the risks for HIV seroconversion. Standardized HIV incidence estimates were calculated separately for the 3 cohorts.

RESULTS

HIV acquisition risk declined by more than 70% for FSWs (P = 0.02) and men (P < 0.001) attending the STI clinics. There was no significant reduction in HIV incidence among women attending STI clinics (P = 0.74). The decline in HIVacquisition risk among male patients with STIs was associated with an increase in reported condom use with recent FSW contact and a decrease in genital ulcer disease.

CONCLUSIONS

We report the first direct evidence for a decline in HIV incidence rates in FSWs and male patients with STIs over time. The lack of change in HIV infection risk among non-sex worker women highlights the need for additional targeted HIV prevention interventions.

Correlates of anxiety and depression among HIV test-seekers at a Voluntary Counseling and Testing facility in Pune, India

OBJECTIVE

We assessed the extent of anxiety/depression/distress using Hospital Anxiety and Depression Scale (HADS) among a cross-section of HIV test-seekers at a Voluntary Counseling and Testing (VCT) facility in Pune, India.

METHODS

HADS has 14 items for uniscale with 7 items each for anxiety and depression rated on a four-point Likert scale. Between September 2002 and March 2003, HADS was administered to 150 consecutive HIV tests-seekers attending NARI-Talera VCT facility. Subsequently, HIV testing was done after obtaining informed consent.

RESULTS

HADS showed strong internal consistency (Cronbach-alpha 0.77). The prevalence of risk behavior (73.3%) and HIV (45.5%) were high. Education levels influenced anxiety (p = 0.033; 0.008), more so in women (p = 0.044). Repeat test-seekers exhibited significant depression (AOR: 2.9; 95% CI: 1.4-6.1; p = 0.004) and distress (AOR: 2.5; 95% CI: 1.2-5.3; p = 0.017). Marital status influenced the uniscale scores. The HIV positive repeat test-seekers were more anxious (p = 0.035) and depressed (0.037).

CONCLUSIONS

Existence of emotional distress among HIV test-seekers, particularly among repeat test-seekers, possibly 'AIDS-anxious' individuals indicates additional counseling needs specifically by introducing gender and education sensitive interventions. VCT staff can be trained to assess emotional distress among HIV test-seekers to formulate long-term intervention.

Age, sex, and HIV seroprevalence among individuals from different parts of India tested for HIV infection in a nongovernmental setting

India has a large population of HIV-infected individuals, but the amount of information available about this population is small and not commensurate with the population's size. Here, we report the age and sex for 11,925 individuals tested for HIV infection in a nongovernmental setting over a 36-month period. The samples were derived from 161 sites located in different parts of the country and the odds of HIV infection among males was 2.27 times that for females. Of the samples from males and females tested, 50 and 65%, respectively, were in the 16-35 year age group. Of the seropositive samples excluding less than 1 year of age, 92% were in the 16-50 year age group. Analysis of this testing data provides limited but valuable information on the HIV epidemic in India.

Low HIV-1 incidence among married serodiscordant couples in Pune, India

Unlike commercial sex workers and patients attending sexually transmitted infection (STI) clinics, married couples are not typically targeted for HIV risk reduction programs in India. Thus, married partners of HIV-infected persons are at particularly high risk for HIV infection. Between September 2002 and November 2004, 457 HIV-1 sero-discordant, married couples were enrolled in a one-year prospective study of HIV transmission in Pune, India. The HIV incidence among uninfected partners was 1.22 per 100 person-years (95% CI 0.45-2.66), which is much lower than what has been previously reported among discordant couples in Africa. This may be due to higher rates of condom use, lower rates of STIs and higher CD4 T lymphocyte counts, among the Indian HIV sero-discordant couples.

Trends in HIV-1 in young adults in south India from 2000 to 2004: a prevalence study

BACKGROUND

Major increases in HIV-1 prevalence in India have been predicted. Incident infections need to be tracked to understand the epidemic's course, especially in some southern states of India where the epidemic is more advanced. To estimate incidence, we investigated the prevalence of HIV-1 in young people attending antenatal and sexually transmitted infection (STI) clinics in India.

METHODS

We analysed unlinked, anonymous HIV-1 prevalence data from 294 050 women attending 216 antenatal clinics and 58 790 men attending 132 STI clinics in 2000-04. Southern and northern states were analysed separately.

FINDINGS

The age-standardised HIV-1 prevalence in women aged 15-24 years in southern states fell from 1.7% to 1.1% in 2000-04 (relative reduction 35%; p(trend)<0.0001, yearly reduction 11%), but did not fall significantly in women aged 25-34 years. Reductions in women aged 15-24 years were seen in key demographic groups and were similar in sites tested continuously or in all sites. Prevalence in the north was about a fifth of that in the south, with no significant decreases (or increases) in 2000-04. Prevalence fell in men aged 20-29 years attending STI clinics in the south (p(trend)<0.0001), including those with ulcerative STIs (p(trend)=0.0008), but reductions were more modest in their northern counterparts.

INTERPRETATION

A reduction of more than a third in HIV-1 prevalence in 2000-04 in young women in south India seems realistic, and is not easily attributable to bias or to mortality. This fall is probably due to rising condom use by men and female sex workers in south India, and thus reduced transmission to wives. Expansion of peer-based condom and education programmes for sex workers remains a top priority to control HIV-1 in India.

HIV testing among female sex workers in Andhra Pradesh, India

Of 6648 female sex workers (FSW) in 13 districts of Andhra Pradesh state in India, only 7.9% reported having undergone HIV testing, and three-quarters of the rest were unwilling to undergo HIV testing in the future. The risk of HIV infection as a result of the non-use of condoms was higher among FSW who reported not having been tested and were also unwilling to get tested, and they also held significantly more negative beliefs about HIV/AIDS.

Cost and efficiency of public sector sexually transmitted infection clinics in Andhra Pradesh, India

Background

Control of sexually transmitted infections (STIs) is an important part of the effort to reduce the risk of HIV/AIDS. STI clinics in the government hospitals in India provide services predominantly to the poor. Data on the cost and efficiency of providing STI services in India are not available to help guide efficient use of public resources for these services.

Methods

Standardised methods were used to obtain detailed cost and output data for the 2003–2004 fiscal year from written records and interviews in 14 government STI clinics in the Indian state of Andhra Pradesh. The economic cost per patient receiving STI treatment was calculated, and the variations of total and unit costs across the STI clinics analysed. Multivariate regression technique was used to estimate incremental unit costs. The optimal number of STIs that could be handled by the clinics was estimated.

Results

18807 STIs were diagnosed and treated at the 14 STI clinics in fiscal year 2003–2004 (range 323–2784, median 1199). The economic cost of treating each STI varied 5-fold from Indian Rupees (INR) 225.5 (US$ 4.91) to INR 1201.5 (US$ 26.15) between 13 clinics, with one other clinic having a very high cost of INR 2478.5 (US$ 53.94). The average cost per STI treated for all 14 clinics combined was INR 729.5 (US$ 15.88). Personnel salaries made up 76.2% of the total cost. The number of STIs treated per doctor full-time equivalent and cost-efficiency for each STI treated had a significant direct non-linear relation (p < 0.001, R² = 0.81; power function). With a multiple regression model, apart from the fixed costs, the incremental cost for each STI detected and cost of treatment was INR 55.57 (US$ 1.21) and for each follow-up visit was INR 3.75 (US$ 0.08). Based on estimates of optimal STI cases that could be handled without compromising quality by each doctor full-time equivalent available, it was projected that at 8 of the 14 clinics substantially more STI cases could be handled, which could increase the total STI cases treated at the 14 clinics combined by 38% at an additional cost of only 3.5% for service provision.

Conclusion

There is un-utilised capacity in the public sector STI clinics in this Indian state. Efforts to facilitate utilisation of this capacity would be useful, as this would enable more poor patients with STIs to be served at minimal additional cost, and would also reduce the cost per STI treated leading to more efficient use of public resources.

High risk of HIV in non-brothel based female sex workers in India

BACKGROUND

Heterosexual contact is the most common mode of HIV transmission in India that is largely linked to sex work. We assessed the non-use of condoms in sex work and with regular sex partners by female sex workers (FSWs), and identified its associations that could assist in planning HIV prevention programmes.

METHODS

Detailed documentation of various aspects of sex work, and sexual behaviour with regular sex partners, was done through confidential interviews for 6,648 FSWs in 13 districts in the Indian state of Andhra Pradesh. Multivariate analysis was done to understand condom non-use with clients.

RESULTS

5,010 (75.4%), 1,499 (22.5%), and 139 (2.1%) FSWs were street-, home-, and brothel-based, respectively. Of the total 6,648 FSWs, 6,165 (92.7%) had penetrative vaginal/anal sex with at least one client in the last 15 days, and of these 2,907 (47.2%; 95% CI 41.2-53.2%) reported non-use of condom with at least one of her last three clients. Lack of knowledge that HIV could be prevented (odds ratio 5.01; 95% CI 4.38-5.73), no access to free condoms (odds ratio 3.45; 95% CI 2.99-3.98), being street-based as compared with brothel-based (odds ratio 3.36; 95% CI 1.87-6.04), and no participation in FSW support groups (odds ratio 2.02; 95% CI 1.50-2.70) were the most significant predictors of condom non-use with clients. Other associations included lower social support, lower income, age >24 years, illiteracy, and living in medium-size urban or rural areas. Of the 2582 who had penetrative sex with regular sex partner within the last 7 days, 2428 (94%; 95% CI 92.1-95.9%) had not used condom at last sex, and 1032 (41.8%) had neither used condom consistently with clients nor with regular sex partner.

CONCLUSION

About half the FSWs do not use condom consistently with their clients in this Indian state putting them at high risk of HIV infection. Non-brothel-based FSWs, who form the majority of sex workers in India, were at a significantly higher risk of HIV infection as compared with brothel-based FSWs. With their high vulnerability, the success of expansion of HIV prevention efforts will depend on achieving and sustaining an environment that enables HIV prevention with the non-brothel based FSWs.