Mitigating Infectious Morbidity and Growth Deficits in HIV Exposed Uninfected infanTs With Human Milk Oligosaccharides

Inclusion Criteria for Mothers: * Provision of signed and dated informed consent form * Stated willingness to comply with all study procedures and availability for the duration of the study * Greater than 18 years of age * For HIV-exposed uninfected children (CHEU): Mothers living with HIV documented based on medical record and with viral suppression (i.e., \<400 copies/mL viral load) documented at delivery * For HIV-unexposed uninfected children (CHUU): Mothers without HIV (document HIV-negative test result at delivery or screening) * Women who initiated breastfeeding of their infant including: * Women who currently exclusively breastfeed their infants, or * Women who breastfed their infants for a period but are no longer breastfeeding, or * Women who are currently breastfeeding their infants in addition to feeding them formula milk or solids * For women with HIV: Those currently on first-line standard of care antiretroviral therapy that was initiated a minimum of 12 weeks prior to delivery of the infant included in this study * Participant has a cell phone that can be used for calls and messages * Agreement to adhere to Lifestyle Considerations throughout study duration Inclusion Criteria for Children: * 3-6 weeks of age * Delivered from a singleton pregnancy * For children of mothers with HIV: At least one HIV diagnostic nucleic acid amplification test prior to enrollment which is negative and no positive test * Child is well enough to have established full breas…