Dr. Karin Nielsen-Saines is a professor of Pediatrics in the Division of Infectious Diseases at UCLA Children's Hospital and a member of the UCLA faculty since 1996. She is an attending physician for Pediatric Infectious Diseases at Mattel Children's Hospital and co-director of the Care4Families HIV clinic at UCLA. She is a physician-scientist, originally from Rio de Janeiro, Brazil, where she graduated in medicine from the University of Rio de Janeiro and completed pediatric residency training at the Hospital dos Servidores do Estado, also in Rio. At UCLA since 1991, she completed both clinical and research fellowships in pediatric infectious diseases and obtained a master's degree in public health/epidemiology. Her main area of research has been pediatric infections, particularly in the area of HIV and congenital infections. She is an internationally recognized expert in the field of pediatric HIV and Zika.