William Brangham:

The goal is to find pregnant women who are infected and get them on antiretrovirals. It will protect them from developing AIDS, but it will also greatly lower the risk that they will transmit HIV to their babies.

Left untreated, that transmission happens roughly 30 percent of the time. This kind of effort in Nigeria is long overdue. Two hundred miles away, in the capital, Abuja, 3-year-old Mubarak Isah is dying of AIDS. His mother already died.

In 2016, roughly 24,000 children died of AIDS-related causes in Nigeria; 12-year-old Yusuf Adamu is also very sick. He, too, lost his mother to AIDS.

In Nigeria, roughly 37,000 children were newly infected in 2016. Over a quarter of a million are living with the virus.

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