Yajaira studied Biochemistry and Molecular Biology at the University Autonoma of Madrid (1995). She did her PhD with Miguel Angel Lasuncion at the Hospital Ramón y Cajal and the University Autonoma de Madrid (Spain) (1996-2001). Yajaira also did two post-docs. The first one with Alberto Muñoz at the Instituto de Investigaciones Biomédicas “Alberto Sols” and the Consejo Superior de Investigaciones Científicas-Universidad Autonoma de Madrid (Spain) (2002-2005) and the second one with Jordan Pober and Bill Sessa at Yale University School of Medicine (2005-2009). Yajaira initiated her independent research career in the Division of Cardiology at New York University School of Medicine in 2009. She joined the Yale faculty in 2013 as an Assistant Professor of Comparative Medicine and Pathology. Yajaira is currently Anthony N. Brady Professor of Comparative Medicine and also serves as Deputy Chair for the Department of Comparative Medicine.