A 24-year-old primigravida with HIV serology positive is in the antenatal OPD. CD-4 Count : 600 cells/uLHIV-1 viral load : 2,680 copies/mL Which of the following is the best method of reducing maternal-fetal transmission of HIV infection?
**Core Concept**
Antiretroviral therapy and maternal-fetal transmission of HIV infection are closely linked. The goal is to suppress viral replication and maintain a high CD4 count to minimize the risk of mother-to-child transmission (MTCT) of HIV.
**Why the Correct Answer is Right**
The best method of reducing maternal-fetal transmission of HIV infection involves the use of antiretroviral therapy, specifically antiretroviral prophylaxis during pregnancy, labor, and postpartum. This approach significantly reduces the risk of HIV transmission to the infant. The use of zidovudine (AZT) as part of combination antiretroviral therapy has been shown to be effective in reducing the risk of MTCT of HIV. The Centers for Disease Control and Prevention (CDC) and the World Health Organization (WHO) recommend that all pregnant women with HIV receive combination antiretroviral therapy, including zidovudine, to reduce the risk of HIV transmission to the infant.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because while antiretroviral therapy is crucial, the specific regimen and duration of treatment are more important than the choice of individual antiretroviral drugs.
**Option B:** This option is incorrect because while antiretroviral therapy is effective, the use of a single antiretroviral drug is not sufficient to reduce the risk of MTCT of HIV.
**Option C:** This option is incorrect because while antiretroviral therapy is crucial, the choice of antiretroviral drugs in this option does not align with current recommendations for reducing the risk of MTCT of HIV.
**Option D:** This option is incorrect because while antiretroviral therapy is effective, the use of antiretroviral therapy alone is not sufficient to reduce the risk of MTCT of HIV without combination therapy.
**Clinical Pearl / High-Yield Fact**
The use of combination antiretroviral therapy, including zidovudine, during pregnancy, labor, and postpartum has been shown to reduce the risk of HIV transmission to the infant by up to 70%. This approach is recommended by both the CDC and the WHO for all pregnant women with HIV.
**Correct Answer:** C. Combination antiretroviral therapy, including zidovudine.