In 1880, the American Medical Association (AMA) establishes a section on the diseases of children, which will lead to the founding of the American Pediatric Society (APS) in 1888.
In response to the need for an adequate milk supply, the new field of pediatrics campaigns to improve the milk supply and encourage the manufacture of new rubber nipples, easy-to-clean bottles, and home sterilizers, supporting the rise of the infant formula industry.
Prior to this point, people relied on wet nurses. This transition is part of a larger turn towards chemistry-based solutions and the growth of the pharmaceutical industry.