Sara Josephine Baker was an American physician notable for making contributions to public health, known for twice tracking down which infamous index case better known as Typhoid Mary,  the first person in the United States identified as an asymptomatic carrier of the pathogen associated with typhoid fever, her name?
Sara Josephine Baker Sara Josephine Baker (November 15, 1873 – February 22, 1945) was an American physician notable for making contributions to public health, especially in the immigrant communities of New York City. Her fight against the damage that widespread urban poverty and ignorance caused to children, especially newborns, is perhaps her most lasting legacy. In 1917, she noted that babies born in the United States faced a higher mortality rate than soldiers fighting in World War I, drawing a great deal of attention to her cause. She also is known for (twice) tracking down Mary Mallon, the infamous index case known as Typhoid Mary.
Martha May Eliot Martha May Eliot (April 7, 1891 – February 14, 1978), was a foremost pediatrician and specialist in public health, an assistant director for WHO, and an architect of New Deal and postwar programs for maternal and child health. Her first important research, community studies of rickets in New Haven, Connecticut, and Puerto Rico, explored issues at the heart of social medicine. Together with Edwards A. Park, her research established that public health measures (dietary supplementation with vitamin D) could prevent and reverse the early onset of rickets.