Declining Trend of HIV Seroprevalence in Pregnant Women: A Retrospective Observational Analysis of 12 Years’ Experience at a Tertiary Care Hospital in Central India

Abstract

Introduction: Human Immunodeficiency Virus (HIV) infection among antenatal women has been reported throughout the country, with a relatively high prevalence in the state of Maharashtra. Data on HIV seroprevalence in antenatal women serve as an indirect indicator of the HIV epidemic's burden in the general population and aid in predicting the same in young children. Diagnostic and treatment services for HIV are concentrated in selected states and districts with high seroprevalence, making it necessary to accurately calculate the prevalence of HIV. Aim: To assess the effectiveness of Prevention of Parent-to-Child Transmission (PPTCT) services and to study the effectiveness of the National Acquired Immunodeficiency Syndrome (AIDS) Control Programme (NACP) in the functioning of PPTCT services. Materials and Methods: A retrospective observational analysis of 12-year data, from January 2007 to December 2018, was conducted in the Department of Microbiology at the Government Medical College and Hospital, Nagpur, Maharashtra, representing Central India. Data collection took place from June 2019 to December 2019, and analysis occurred over the subsequent two months (January 2020 to February 2020). The total sample size was 101,865 patients. All pregnant women registered in the Antenatal Clinic (ANC) under the PPTCT Program were included in the present study, and Strategy III of the National HIV testing algorithm was followed. The women's ages, their partners' serostatus, and records of babies born to HIV seropositive mothers were obtained and analysed. The statistical analysis of the data was performed using Stata (version 10.4.2009, STATA Corp., Texas, USA) and Epi Info 7 (version 7.1.06, 2012, CDC, Atlanta, USA), employing the Chi-square test for linear trend (Extended Mantel-Haenszel). A p-value <0.05 was considered significant. Results: The seroprevalence of HIV infection among pregnant women was 1.04% in 2007, decreasing to 0.23% by 2017. In 2009, 88.9% of women were counselled, and 100% were tested for HIV, with pretest counselling steadily increasing to 100% by 2012. The trend in HIV testing, however, remained at 100% over the span of 10 years. Post-test counselling varied from 89.6% to 99.9%, whereas the trend of HIV testing among partners fluctuated from 50% to 94.44%. The overall HIV positivity among babies, after 18 months of follow-up, was 4.77%. Conclusion: The HIV seroprevalence among the pregnant population is steadily declining. More and more women are availing themselves of the facilities at Integrated Counselling and Testing Centre (ICTC). Intensive health education and the availability of diagnostic and therapeutic services across the country have reduced the burden of the HIV/AIDS problem in the country.

Keywords

• acquired immunodeficiency syndrome
• human immunodeficiency virus
• infectious disease transmission vertical
• prevention of parent-to-child transmission