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UCLA Pediatric Infectious Diseases


Meet our Physicians


Yvonne J Bryson MD - Pediatric Infectious Diseases UCLA

Yvonne J. Bryson, MD

Division Chief - Professor of Pediatrics

Dr. Bryson is a Distinguished Professor and Chief of Pediatric Infectious Diseases at the David Geffen School of Medicine at UCLA, and also a member of the UCLA AIDS Institute. She has significant experience in leading large multicenter clinical trials and networks and in developing clinical sites and laboratories. She is recognized as a national and international expert and leader in the field of HIV and perinatal transmission. Dr. Bryson has mentored numerous postdoctoral fellows and young faculty for successful careers in academic medicine.  She was one of the original members of the Elizabeth Glaser Pediatric AIDS Foundation heath advisory board and helped start the foundation with Elizabeth Glaser, Dr. Richard Stiehm, and two co-founders. She is also widely recognized as an expert in the field of sexually transmitted diseases, specifically Herpes Simplex infections.  Dr. Bryson has had a major role in developing the perinatal HIV scientific agenda for the Pediatric AIDS Clinical Trials Group (PACTG) as a longtime member of the perinatal HIV scientific advisory group, and as scientific chair for 3 years. She has made a strong commitment to international studies and to her collaborators in Brazil to help develop the necessary infrastructure to design, conduct and implement new approaches to prevent and treat HIV. 


James D. Cherry, MD - Pediatric Infectious Diseases UCLA

James D. Cherry, MD

Professor of Pediatrics

Dr. Cherry has more than 45 years of experience in research, teaching and clinical practice in the fields of infectious diseases and epidemiology. His laboratory experience has been in virology, mycoplasmology and more recently, molecular microbiology relating to Bordetella species. His main research over the last 40 years has focused on vaccines and vaccine preventable diseases. The majority of his present looks at the epidemiology of Bordetella pertussis worldwide and its prevention by new vaccine strategies. He has been a frequent consultant to the Centers for Disease Control and Prevention, the Advisory Committee on Immunization Practices and vaccine manufacturers relating to vaccine preventable diseases. Dr. Cherry was Chief of the Division of Pediatric Infectious Diseases for 27 years. During that time, over 40 fellows in Infectious Diseases were trained and many have international positions (New Zealand, Thailand, Philippines, Korea, and Germany). Dr. Cherry is the author and co-author of over 600 publications, including The Textbook of Pediatric Infectious Diseases, which he is the editor, is now in press for the 7th edition. He has received numerous awards, including the Distinguished Physician Award from the Pediatric Infectious Diseases Society.


Jaime G. Deville, MD

Clinical Professor of Pediatrics

Dr. Deville is a Clinical Professor of Pediatrics in the Division of Infectious Diseases at the David Geffen School of Medicine at UCLA and provides primary care for patients in the Care-4-Families Clinic at UCLA. Dr. Deville obtained his MD from Universidad Peruana Cayetano Heredia, Lima, Peru. He also completed a one year Tropical Medicine fellowship at the Alexander Von Humboldt Tropical Medicine Institute in Lima, Peru, a pediatric internship at the Cayetano Heredia University Hospital in Lima, Peru, and subsequently completed his pediatric residency as well as chief residency at State University of New York Downstate Medical Center. Dr. Deville has been at UCLA since 1992 where he completed research and clinical Pediatric Infectious Disease fellowships, including a one year epidemiology fellowship at the UCLA Center for Vaccine Research.  Dr. Deville is Vice-Chair of the Advisory Commission in Childhood Vaccines for the Health Resources and Services Administration of the US Department of Health and Human Services. He is also a member of the National Advisory Committee of the National Hispanic Medical Association and serves as a reviewer for 13 leading medical journals. Dr. Deville's main areas of research have been in childhood vaccines, immunology and morbidity of pediatric HIV infection, and neonatal and pediatric gram-positive infections. He was one of the leaders in the study and development of linezolid for treatment of resistant gram-positive bacterial infections in children.


Paul A. Krogstad, MD - Pediatric Infectious Diseases UCLA

Paul A. Krogstad, MD

Professor of Pediatrics

Dr. Krogstad is a Professor with a joint appointment in the Departments of Pediatrics and Molecular and Pharmacology. Dr. Krogstad's laboratory focuses on molecular virology and the pathogenesis of viral diseases.  His studies of HIV pathogenesis currently include the impact of HIV on T cell production and turnover in HIV infected children and adolescents. These studies may suggest new forms of therapy for HIV infection which target viral-cellular interactions, and in new approaches to the reversing immunological impact of HIV on immunological ontogeny. Dr. Krogstad's laboratory research also includes the study of cellular factors involved in Coxsackie myocarditis and the identification of potential therapies for enterovirus infections. In addition, he has led and collaborated in several studies of new drugs for the treatment of HIV. Dr. Krogstad has received several teaching awards (including The Robert C. Neerhout Teaching Award in 2003) and was the recipient of the Pediatric AIDS Foundation Scholar Award in 1991 and the Elizabeth Glaser Scientist Award in 2000 for his excellence in the field. Since 2007 he has been a member of the Antiretroviral Working Group which provides guidelines for the Treatment of HIV infected infants and children.


Karin Nielsen, MD - Pediatric Infectious Diseases UCLA

Karin Nielsen, MD

Clinical Professor of Pediatrics

Dr. Nielsen is a Clinical Professor of Pediatrics in the Division of Infectious Diseases at the David Geffen School of Medicine at UCLA and has been a member of the UCLA faculty since 1996.  She has been the Co-PI of an international collaborative effort funded by the NIH for the conduct of HIV prevention and treatment trials in Brazil for the last seven years. Dr. Nielsen is an elected member of the Scientific Oversight Committee of the NIH funded pediatric network (IMPAACT) leadership group. She is also a consultant for the Italian based DREAM program which implements treatment of over 40,000 HIV-infected individuals in six African countries. She is an attending physician for Pediatric Infectious Diseases and for the CARE-4-Families Clinic at UCLA.  Dr. Nielsen has a Masters Degree in epidemiology from UCLA's School of Public Health. She obtained her MD from the Universidade do Rio de Janeiro, Brazil and completed pediatric residency training at the Hospital dos Servidores also in Rio. She has been at UCLA since 1991 where she completed both research and clinical fellowships in Pediatric Infectious Diseases. Dr. Nielsen's main area of research has been pediatric/perinatal HIV infection. She has conducted studies in the pathogenesis of transmission of HIV, studies of virologic and immunologic markers of pediatric long term survival in HIV infection, treatment trials and PK studies of protease inhibitors in children, development of biological assays for diagnostics and monitoring of viral resistance, and immunological studies.


Lynn Ramirez, MD - Pediatric Infectious Diseases UCLA

Lynn Ramirez, MD

Assistant Clinical Professor of Pediatrics

Dr. Ramirez  is an Assistant Clinical Professor of Pediatric in the Division of Infectious Diseases at the David Geffen School of Medicine at UCLA and Mattel Children's Hospital UCLA and has just recently joined our faculty from Boston Children's Hospital. Dr. Ramirez obtained her undergraduate and medical degree from Harvard University, completed her internship, residency, and chief residency at the University of California at San Francisco, and her fellowship in pediatric infectious diseases at Boston Children's Hospital.  She also holds a Master's of Science in Health Promotion Sciences from the London School of Hygiene and Tropical Medicine.  Dr. Ramirez joins our faculty to focus on pediatric infection control and antimicrobial stewardship efforts at the Ronald Regan Medical Center and Santa Monica Hospital.  Dr. Ramirez's research interests also include global health, pediatric HIV, and implementation science methods.  She has completed multiple pediatric HIV projects in South Africa including evaluating the acceptability and feasibility of pediatric HIV testing in an epidemic setting and evaluating the linkage to care of adolescents transferred from a hospital-based clinic to decentralized government clinics. 


Nava Yeganeh, MD MPH - Pediatric Infectious Diseases UCLA

Nava Yeganeh, MD MPH

Clinical Instructor of Pediatrics

Dr. Yeganeh is a Clinical Instructor in the Department of Pediatrics, Division of Infectious Disease at the David Geffen School of Medicine at UCLA. She obtained her medical degree at University of Washington School of Medicine, her Masters of Public Health at Johns Hopkins School of Public Health. Dr. Yeganeh has been at UCLA since 2005, completing her training in pediatrics and infectious diseases.  Her current research focuses on preventing transmission of HIV to infants through the implementation of TRIPAI - an initiative focused on offering rapid HIV and STD testing to partners of pregnant women.  Her research is currently taking place at collaborating research sites in Porto Alegre, Brazil.  Her future research will focus on expanding TRIPAI intervention by utilizing other rapid tests (Syphilis, Hepatitis B, C) to detect sexually transmitted disease in the father before he could transmit infection to the mother and infant.  She is a former FRAME trainee, which allowed her to use innovative technologies, including audio computer-assisted survey interviews to detect more sensitized behaviors during TRIPAI.  Through her research, she has created close collaborations with members of the School of Medicine, the School of Public Health, and the School of Engineering, and will continue to perform research with new fellows both at UCLA and in Brazil.