Our Fellows

Our fellows hail from around the globe with interests in a variety of infectious disease topics. Read about some of their fellowship experiences below.

The Division of Infectious Diseases welcomes five new fellows for 2018.

First Year Fellows


First Year Fellow


I am originally from Kingman, Arizona. I received a medical degree from The College of Medicine at the University of Arkansas for Medical Sciences (UAMS) and completed my residency at Washington University School of Medicine.

I enjoy indoor climbing and own over 300 board games. I am currently married with no children.

First Year Fellow


I am originally from Indiana. I received my undergraduate and master’s degrees from Purdue University and went to medical school at Chicago College of Osteopathic Medicine. For residency I trained at the University of Chicago (NorthShore). I am married and my husband is a radiology resident in Milwaukee.

One of my hobbies is running and my husband and I also enjoy spending our time outdoors with our dog.

First Year Fellow


I was born and raised in Venezuela and completed medical school at Universidad Central de Venezuela.

During my free time I practice Ashtanga yoga. I also love to travel, listen to good music and horseback riding.

First Year Fellow


I am from Lincoln, Nebraska . I graduated with Distinction with a Bachelor of Engineering in 2011 from the College of Engineering at the University of Nebraska. I am also a graduate of the Univesrity Honors Program. I received my medical degree from the University of Nebraska Medical Center in Omaha NE.

I participated in the Enhanced Medical Edcuation Track: Quality Assurance and Patient Safety. Outside of work I enjoy reading, going to shows, and a very occasional hike.


First Year Fellow


I was born and raised in Fort Smith, AR. I attended medical school at UAMS in Little Rock, AR. My residency training took place at UAB in Birmingham, AL. I enjoy being outdoors particularly on a bright, warm, and sunny day.

My hobbies include running/ hiking/ exploring new trails and (more recently) fishing. I also enjoy experiencing new foods and restaraunts. I do have a sweet tooth and have known to frequently bring candy to share.


Second-year fellows

Second Year Fellow


  • Medical Degree: Florida International University Herbert Wertheim College of Medicine, Miami, FL
  • Residency: Wake Forest Baptist Medical Center, Winston-Salem, NC (2017)

I am originally from Indialantic, FL. Outside of work and training I enjoy backpacking, grilling and fishing. I chose an ID fellowship training at Washington University because I wanted a large referral center for the interesting cases along with a very active cancer/BMT center that makes for excellent training in transplant ID. The collaboration between the microbiology lab and the division of infectious disease offers a unique opportunity to learn about the advances in diagnostics and gives the infectious disease fellows a great insight into what goes into every culture.

During my fellowship training I would like to focus on microbiology, patient safety, and hospital epidemiology.

Second Year Fellow


  • Medical Degree: Universiti Sains Malaysia School of Medicine Sciences, Kubang Kerian, Kelantan, Malaysia (2013)
  • Residency: Crozer Chester Medical Center, Newton Square, PA (2017)


Dr. Alan E. Barman Award for Academic and Medical Excellence, Crozer Chester Medical Center 2016-2017

My interest in infectious diseases began in Malaysia, where I was born and raised.  During my medical school training at the Universiti Sains Malaysia, I was fascinated by the myriad of endemic tropical infectious diseases such as malaria, dengue fever, and TB. I find it challenging and enjoy the constant evolving nature of this field; emergence of new diseases, re-emergence of old diseases, and antimicrobial resistance. I chose ID fellowship at WashU because of its strong clinical training, abundant research opportunities, solid program leadership, and more importantly the opportunity to tailor my educational experience to my career goals.  My research interests are hospital epidemiology and infection control.

Second Year Fellow


  • Magnum Cum Laude, Vanderbilt University Bachelor of Arts (2009)
  • Dean’s List Vanderbilt University (6 semesters)
  • Rotary Club Service Excellence Award, Milwaukee, WI (2004)

I was born and raised in Milwaukee, WI. I studied Music and Neuroscience at Vanderbilt University then returned to Milwaukee to complete my medical education and Internal Medicine residency at the Medical College of Wisconsin.

I chose ID because I am fascinated by every aspect of Infectious Diseases from microbiology to consults to epidemiology. I feel that I can make a significant impact with the research opportunities available in ID. I chose WashU because of its seemingly endless physical and intellectual resources in an environment that is friendly yet constructive.

Second Year Fellow


  • BS, Chemistry, BA in Spanish Language: Pacific Union College, Angwin CA (2008)
  • Medical Degree: State University of New York, University at Buffalo, Buffalo, NY (2015)
  • Doctor of Philosphy, Microbiology and Immunology: State University of New York, University at Buffalo, Buffalo, NY (2015)
  • Residency: Barnes-Jewish Hospital at Washington University Medical School, St. Louis (2017)

I’m from Angwin California. In my free time I enjoy sampling all varieties of sugar, particularly ice-cream. Other hobbies I enjoy include running ultra-marathons, scuba-diving and spending time with my dog.  I chose to stay at WashU for my ID fellowship because of both the fantastic breadth of cases as well as the depth of research expertise here.

Third-year fellows

Abdullah Aljorayid, MD

Third-Year Fellow

MD – Qassim University College of Medicine, Saudi Arabia
Residency – Case Western Reserve, Cleveland, OH

I am from Saudi Arabia and while at Case Western Reserve University I worked on a multi-year study of flu vaccine responses in older population. I completed my residency at University Hospitals Case Medical Center in Cleveland. I am married to my wonderful wife who is working toward her master’s degree in computer science. We have an 18 month old daughter.

Juan Calix, MD, PhD

Third-Year Fellow

I was born in New Orleans, LA, where I lived the first ten years of my life. I then moved in 1992 to my family’s homeland El Salvador, where I resided until I graduated from high school. I returned to the U.S. to complete my undergrad at Loyola University New Orleans. I took a year off before medical school to work in Hurricane Katrina/Rita relief efforts in Baton Rouge. I then obtained my M.D. and Ph.D. in microbiology from the University of Alabama at Birmingham. I was fortunate to have a successful doctorate career, having been rewarded an F31 grant from the NIAID, the UAB Samuel B. Barker Award for Excellence in Graduate Studies and multiple travel awards to present my research at the national and international level. Most importantly, while at UAB I met my wife who also obtained her PhD in Microbiology. We got married during our doctorate years.

Carlos Mejia, MD

Third-Year Fellow

MD – Universidad de San Carlos Facultad de Ciencias Medicas, Guatemala
Residency – Hospital Universitario La Paz, Madrid, Spain

I’m originally from Guatemala city, where I studied medicine and graduated from San Carlos University. I did my Internal Medicine training at La Paz University Hospital in Madrid, Spain.

Fourth-year fellow

Brett Jagger, MD, PhD

Fourth-Year Fellow

After completing medical school I matched into the Physician Scientist Training Program at Barnes-Jewish Hospital, where I trained in internal medicine. I am married to my wonderful wife, Rebecca, and we have two daughters, Elizabeth and Margaret.

Since my undergraduate days in microbiology class, I have been fascinated by the microbial world, and this interest has only grown with each stage of my training. Particularly in virology, my field of interest, there are significant advances in both basic science and clinical research on a regular basis. It would be hard to imagine a more exciting, challenging, and rewarding profession!

In comparison with other institutions of comparable academic stature, WashU is more collegial and supportive for those pursuing an academic career path. Just as important, the Division has a track record of training and supporting physician-scientists with strong mentorship and career development. These factors are the perfect complement for the strong clinical training environment and excellent case mix. And St. Louis is really a great town! It’s been a lot of fun getting to know the city and exploring the many great neighborhoods.

Prior fellows with a sense of humor

Highlights From 2018 Graduate Fellows

I am going to work for Geisinger Medical Center in Danville, PA as an Infectious Disease Physician and will specialize in HIV/AIDS as well as Hepatitis C care and treatment. The highlight of my fellowship was interacting, learning, laughing, and growing with well-established, internationally known, and well-respected faculty and fellows. I have learned a lot from these great people and grown to consider many of them my friends. – Darrell McBride, DO

I will be doing a Critical Care fellowship at Mercy Hospital in St. louis. My future long-term plan is to combine ID and critical care in my practice to provide care to critically ill and complex patients. I plan to stay and practice in St. Louis. I had a very wonderful experience during my training at Barnes-Jewish Hospital. The training gave me exposure to seeing a wide array of patients with varied ID issues. The friendliness and camaraderie within the department make it the best place to learn from a fellow stand-point. I thoroughly enjoyed my work in the department and saw myself grow as a budding ID physician. – Krunal Raval, MD

I will be staying at Washington University to complete the research component of my Physician Scientist Training Program. I will be performing research to further understand the pathogenesis of Acinetobacter infections, both with epidemiological studies and basic science. One thing that I took away from the program was the ability to navigate the ever-more-complex healthcare delivery system in order to optimize the care received by our patients. As Infectious Disease doctors we typically have a bird’s eye view of the system, and it is important to know how who to go to with questions and how to improve healthcare delivery. – Juan Calix, MD, PhD

Highlights From 2017 Graduate Fellows

Working with a great and hilarious class of fellows. Being given the opportunity to pursue my research interests in a supportive environment. I am thankful to all my mentors and the division for the exceptional support they have provided.
Jason Burnham, MD

I have had a wonderful time doing Infectious Disease Fellowship at Washington University. I feel so fortunate to have had the opportunity to be a part of such a great division at this outstanding academic institution. My highlights were ‘by far’ my class of fellows; we helped each other in good and bad times and we shared many laughs. I feel obligated to thank Dr. Kirmani and Dr. Powderly for supporting me throughout the two years. – Batool Eldos, MD

Highlights From 2016 Graduate Fellows

“My class of fellows are the highlight of my training here, as we have become a family, guided by our wonderful program director and division leadership. Together, we negotiated a steep learning curve and made work enjoyable. I was fortunate to have great research mentors in Dr. Powderly and Dr. Lawrence, who have helped mold my career and research interests.”
Anupam Pande, MD, MPH, 2016

“I am lucky to be working with three mentors who have a passion for infectious diarrhea (Drs. Erik Dubberke, Carey-Ann Burnham and Margie Olsen). They are exemplary scientists and are generous with their time and knowledge. I also am thankful to my career development mentors (Drs. Vicky Fraser, Bill Powderly, Hilary Babcock, Dave Warren, and Clay Dunagan), who are constant sources of support and are always there to nudge me in the right direction.” – Jennie H. Kwon, DO, 2016

“I had a wonderful experience as a fellow in the Division of Infectious Diseases. I had an amazing group of co-fellows with whom I spend most of my time both at work and outside of work. I know I have made friends for life. I have received extraordinary mentorship from Dr. Dave Warren, who has taken interest not only in my research, but also has helped me foster and further my career and personal goals. I am following a non-traditional path to academic medicine and infectious diseases, and with Dr. Powderly’s continuous support, I have had wonderful opportunities, including spending two months at the World Health Organization in Geneva, Switzerland.” – Caline Mattar, MD, 2016

“Being an ID fellow has allowed me to develop greatly in the clinical aspect of ID, which was my main goal. During my training I developed an interest in infection prevention and would like to thank my research mentor, Dr. Warren, for his guidance and constant support. I would also like to thank Dr. Hsueh for introducing me to the exciting world of antibiotic stewardship (AS) and allowing me to work with the new great AS team. Finally, big thanks to my co-fellows, whom I’m sure I will remain friends with for a long time.” – Maria Reyes Angeles, MD, 2016

“My training has greatly exceeded what I hoped for. In retrospect, I am amazed at the diversity and the complexity of the cases I have been able to see both as inpatient and as outpatient. I am most grateful for my mentors (William Powderly, MD, Margie Olsen, PhD, MPH, and Richard Hotchkiss, MD) and my collaborators. I am also very grateful that I have been able to work towards a Masters of Science in Clinical Investigation. My research has involved participation in 4 multicenter trials, and over a dozen studies of our own devising focusing on Candida, Histoplasma and Cryptococcus. Due to this work, I have been able to travel all over the United States, Central and South America, as well as Australia.
– Andrej Spec, MD, 2016