[3] As Haiti's first female practitioner, she played an important role in providing improved medical access and tools for Haitian citizens.
[1] Three years after her internship, she worked at the New York Post-Graduate Medical School and Hospital on a Pan-American Sanitary Bureau Fellowship.
[3] Sylvain made many contributions to the medical field in Haiti and inspired other Haitian women to follow her steps.
[1] The high mortality rate in Haiti inspired her to be a doctor, she invested her time and skills in treating many Haitians for various diseases.
[1] She created a special committee that helped collect funding from France and among the Haitian diaspora for a hospital that she wanted to build in Frères, a city in Haiti ten-minutes away from Pétion-Ville, in order to provide medical access to a community of over 100,000 people.
[9] Art, painting, and theater were very important interest for Yvonne Sylvain during her early stages of life because she was deeply inserted in a very cultural community.
[9] She also published articles on public health issues in the Ligue's news outlet, La Voix des Femmes.