Breastfeeding is contraindicated for parents who are HIV-positive, who have human T-cell lymphotropic virus type I or type II, who have or may have Ebola, and who are using illicit street drugs.[1] It is also contraindicated for infants with galactosemia, a rare genetic disorder that makes the infant unable to correctly metabolize the sugars in milk, which can be detected by newborn screening programs. Infants with galactosemia must be fed with lactose-free formula exclusively.[2]