On March 9, Adèle*, 39, and her 6-week-old baby come to Abobo General Hospital, located in the north of Abidjan, Côte d’Ivoire’s capital city, for a postnatal care checkup. Dried blood spots are collected from the baby’s heel for an HIV PCR (polymerase chain reaction) test, a routine test for all babies born to HIV-positive mothers. The test ensures early diagnosis of HIV infection to improve the survival and quality of life of HIV-exposed babies.