Human immunodeficiency virus (HIV) infection in pregnancy may result in adverse obstetric outcomes, such as stillbirth. The present study aimed to compare the stillbirth rate (SBR) in HIV-infected pregnant women with that in the general population, observing the year-wise trends of HIV infection-associated SBR and identifying possible associated exposures. A retrospective cohort study was conducted through the analysis of secondary data from 314 integrated counseling and testing centers across the state of West Bengal, India, from 2012 to 2020. A total of 3,478 HIV-infected pregnant women were followed up, and year-wise SBR trends were compared with that among all pregnancies of the state as per the latest available Sample Registration System report in India. A linear regression analysis of the year-wise trend in SBR was performed. T-test of two means and the relative risk (RR with 95% confidence interval) was conducted to identify the associations between different exposures and stillbirth. The SBR was significantly higher (26.7/1,000) in HIV-infected pregnancies than in all pregnancies (5/1,000) and was significantly reduced after the initiation of antiretroviral treatment (RR = 0.09: 0.05-0.16). Spouse testing for HIV (surrogate marker for familial involvement) (RR = 0.35: 0.20- 0.61) and maternal literacy (RR = 0.62: 0.40-0.97) were also found to be significantly effective in preventing stillbirth.

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