Explain how HIV transmits from mother to child?

Human Immunodeficiency Virus (HIV) is a viral infection that attacks and weakens the immune system of an individual. It is primarily transmitted through body fluids such as blood, semen, vaginal secretions, and breast milk. The transmission of HIV from mother to child is known as mother-to-child transmission (MTCT) or vertical transmission. MTCT is a major cause of HIV infections in children, with an estimated 1.7 million children under the age of 15 living with HIV globally. This essay will discuss the various ways in which HIV can transmit from an HIV-positive mother to her child.

During pregnancy:

Vertical transmission of HIV can occur during pregnancy through the placenta. The placenta is the organ that connects the fetus to the mother’s uterus and supplies it with nutrients and oxygen. If the mother is HIV-positive, the virus can pass through the placenta to the fetus, infecting it. The risk of transmission during pregnancy is low, estimated to be between 5-10%, and is influenced by several factors such as the mother’s viral load, the stage of her HIV infection, and the use of antiretroviral therapy (ART).

The mother’s viral load is the amount of HIV in her blood. The higher the viral load, the greater the risk of MTCT. Studies have shown that women with a high viral load (greater than 1,000 copies/ml) have a higher risk of transmitting the virus to their child during pregnancy. However, if the mother is on ART and her viral load is undetectable (less than 50 copies/ml), the risk of transmission is greatly reduced. ART is a combination of drugs that suppress the replication of the virus in the body, reducing the viral load and the risk of transmission.

During labor and delivery:

Vertical transmission can also occur during labor and delivery. During childbirth, the baby can come into contact with the mother’s infected blood and other bodily fluids, increasing the risk of transmission. The risk of transmission during delivery is estimated to be between 5-10% and is also influenced by _____ _______ __________ ____ _____ __________ _____ ______.
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