 This study explores the vaccine-related knowledge, attitudes, and decision-making of uninsured Latin American immigrant mothers of adolescent daughters for TAP, men ACWI, and HPV vaccines revealing a lack of knowledge about vaccine-preventable diseases and recommended vaccinations for adolescents. The findings highlight the need for efforts to improve understanding of vaccines and provide affordable, accessible vaccines among undersourced populations. This article was authored by Julia E. Painter, Suyan Vionado, Mesquita, Lauren Jimenez, and others.