Two-year-old Evans was brought to the Nyumbani Children’s Home in Nairobi, Kenya a year ago, suffering from HIV and tuberculosis. With no family to care for him, Evans was referred to the orphanage by a health center after he stopped responding to medical treatment.

The U.S. government's foreign aid freeze has upended the supply chain for medical products crucial for fighting diseases including HIV and malaria in some of the world's poorest countries, and life-threatening gaps could persist for months,