Overview and mission

The Pediatric Infectious Diseases Fellowship at Children’s Hospital of Philadelphia (CHOP) is a three-year training program designed to provide pediatricians who have completed general pediatric training with a broad array of training opportunities.

Our goal is to prepare individuals to excel as future leaders in the field of pediatric infectious diseases by providing a diverse curriculum that includes opportunities in clinical infectious diseases, bench and translational research, clinical epidemiology, antimicrobial stewardship, infection prevention and control, QI, medical education, and global health.

Our program is fully accredited by the Accreditation Council for Graduate Medical Education (ACGME) and graduating fellows will be eligible and prepared for the American Board of Pediatrics Pediatric Infectious Diseases subspecialty exam.

Program curriculum

Year 1

During the first year of fellowship, trainees spend the majority of their time expanding their clinical skill set. The goal of this clinical experience is to provide trainees with exposure to a variety of infectious diseases in both immunocompetent and immunocompromised hosts under the oversight of experienced attending physicians. In the first year, fellows spend approximately 34 weeks on service, with about 75 percent of those weeks on the general service and the remaining on the immunocompromised service. Additionally, first-year fellows follow patients in our busy outpatient clinic.

The inpatient and outpatient services are supported by several teams, including the Department of Infection Prevention and Control, the Antibiotic Stewardship Program, the Infectious Disease Diagnostics Lab, and Global Health Center. Through dedicated electives, trainees will develop expertise and key skills, including use of antibiotics, use of diagnostic testing and hospital epidemiology.

While the first year is clinically focused, fellowship leadership is committed to using this year to help each fellow build a transition plan for the more research-focused second and third years. During the first year, the fellowship director, associate program director or division chief will help each fellow select a research track in clinical epidemiology, translational science, basic science, antimicrobial stewardship, medical education or global health and identify a mentor.

Years 2 and 3

The second and third years of fellowship training are designed to provide trainees with ample time to conduct research in a protected environment by minimizing concurrent clinical responsibilities. Fellows are provided the opportunity to pursue a focused research project, gaining experience designing and conducting hypothesis-driven research with the goal of developing publishable manuscripts by the end of year three.

Years two and three also offer fellows the opportunity to pursue educational advancement opportunities, including the clinical epidemiology or health policy master of science program at the Perelman School of Medicine at the University of Pennsylvania, and the master’s degree program at the Institute for Translational Medicine and Therapeutics at the Perelman School of Medicine at the University of Pennsylvania.

Fellows are also encouraged to apply for funding for their second and third years, such as the Infectious Diseases NIH T32 Basic Science Training Grant. Mentors and fellowship leadership provide support throughout the application process, helping fellows to hone the skills necessary to produce a competitive grant.

Second- and third-year fellows have some clinical responsibilities, including up to eight weeks of inpatient consult service and up to 10 days in our outpatient clinic. These clinical experiences are important because they help fellows refine their clinical skills and develop increased clinical confidence and autonomy.

Mentorship

Soon after starting fellowship, fellows are paired with both a clinical and research mentor for the duration of their fellowship. These mentors are dedicated to assisting our fellows in achieving their goals. While mentors are often faculty within the Division of Infectious Diseases at CHOP, fellows are also encouraged to explore opportunities for mentorship tailored to their research interests with the University of Pennsylvania faculty in areas including but not limited to:

• The Wistar Institute
• Department of Microbiology at the Perelman School of Medicine at the University of Pennsylvania
• Institute for Translational Medicine and Therapeutics at the Perelman School of Medicine at the University of Pennsylvania
• Center for Clinical Epidemiology and Biostatistics at the Perelman School of Medicine at the University of Pennsylvania

Your mentors will:

• Assist you in acquiring and mastering clinical and teaching skills
• Be available to preview/edit your lecture or case conference material
• Help foster clinical questions to direct your research interests
• Facilitate your ability to achieve work/life balance
• Share areas for improvement and offer formative feedback
• Serve as a role model for your career development
• Assist you in identifying an important clinical question and designing a research project to address that question
• Guide you in every phase of your research endeavors
• Assist you in preparing to present research at national/international society meetings

Clinical experiences

Fellows will receive ample inpatient clinical exposure on the general and immunocompromised services. Each service is attended by one or two faculty members, and fellows rotate through both services a week at a time. Fellows will also have the opportunity to care for children in our outpatient clinic. All inpatient and outpatient clinical responsibilities take place on CHOP’s Philadelphia campus.

General inpatient infectious disease consult service

The general service consult team typically consists of two fellows, two nurse practitioners and two attending physicians. Fellows oversee rotating medical students and residents that contribute as integral members of the team. The patient population for this service is broad, including patients in the Pediatric Intensive Care Unit (PICU) and the Harriet and Ronald Lassin Newborn/Infant Intensive Care Unit (N/IICU), as well as the subspecialty (eg, gastrointestinal inpatient service), surgical, general pediatrics and adolescent units.

Immunocompromised (IC) inpatient infectious disease consult service

The IC service consult team typically consists of one fellow and one attending with the support of our dedicated nurse practitioners, as well as upper-year residents with a specific interest in infectious diseases or immunocompromising conditions. This service focuses on patients with any immunocompromising condition, including solid organ and bone marrow transplant recipients, cancer patients, patients with primary immune deficiencies, and patients with any other condition requiring immunosuppressive medications (eg, long-term steroids, biologics).

Outpatient infectious disease clinic

With the support of an attending physician, fellows have the opportunity to follow patients in the outpatient Infectious Disease Clinic. Patients seen in the outpatient clinic include those referred by their primary care pediatricians for infectious disease consultation, as well as patients seen for follow up from inpatient hospitalizations.

Elective weeks

To complement the infectious disease clinical experience, each fellow trainee will have the opportunity to complete a variety of elective weeks. Fellows are encouraged to explore opportunities that align with their career interests; however, a number of weeks are dedicated to elective time, including the following:

• Clinical microbiology laboratory (two weeks in the first year)
• Infection prevention and control (two to three weeks in the first year, one week in the second/third years)
• Antimicrobial stewardship (one to two weeks in the first year)
• Research planning (three weeks in the first year)

Combined Internal Medicine & Pediatrics Fellowship

In partnership with our neighbor institution, the Hospital of the University of Pennsylvania (HUP), we are pleased to offer training in combined adult-pediatric (med-peds) infectious diseases. We have developed a four-year training pathway that culminates in board eligibility for Infectious Diseases (ABIM) and Pediatric Infectious Diseases (ABP). As of July 2026, we have two successful graduates of this pathway and two fellows currently in training. 

How to Apply:

Qualified applicants (board eligible/certified or anticipating board eligibility in both internal medicine and general pediatrics) should apply to both the Hospital of the University of Pennsylvania (HUP) Adult Infectious Diseases Fellowship Program and the Children’s Hospital of Philadelphia (CHOP) Pediatric Infectious Diseases Fellowship Program in ERAS. If you have not already been in contact with the programs to express your interest in a combined training pathway, we recommend sending an email addressed to Sandra Erby (Sandra.Erby@pennmedicine.upenn.edu) and Patrice Sport (sportp@chop.edu) indicating your interest in applying to the combined adult-pediatric ID pathway. Program leaders of both categorical fellowship programs will coordinate to review applications and extend interview applications to eligible applicants. 

As the demand for this pathway varies from year-to-year, we do not have a separate NRMP match for this pathway. Enrollment in the program occurs through the adult ID NRMP match so that initial matriculation is into the adult ID fellowship program. In summary, apply to both categorical programs (HUP ID and CHOP ID) in ERAS, rank only the adult ID program in NRMP. 

Overview of Training:

Year 1: HUP Adult Infectious Diseases core clinical year + 3-4 weeks CHOP inpatient consults (completed during an elective block), first year of 2-year adult HIV continuity clinic requirement

Year 2: CHOP Pediatric Infectious Diseases core clinical year, second year of 2-year adult HIV continuity clinic requirement

Year 3: Scholarly activity, 4 weeks CHOP inpatient consults, 4 weeks of HUP adult ID clinical activities tailored to clinical goals

Year 4: Scholarly activity, 4 weeks CHOP inpatient consults, 4 weeks of HUP adult ID clinical activities tailored to clinical goals

Current and graduated fellows

First year: (Starting 7/2026) Kaelo Moahi, MD, Michelle Munyikwa, MD, PhD and Krista Stacey, MD
Second year: Ninoshka Caballero Colon, MD; Julia Dewey, MD and Maria Mejia Plazas, MD
Third year: Robert F. T. Bucayu, MD, MPH; Alex B. Green, MD and Grace St. Cyr, MD

All of our fellowship graduates have gone on to embark on successful careers in pediatric infectious diseases in a variety of areas, including clinical care, hospital operations, research, epidemiology and public health, global health, and pharmaceuticals and other industries.

Fellowship graduates have earned positions at the following institutions:

• Children’s Hospital of Philadelphia, Philadelphia, PA
• Boston Children’s Hospital, Boston, MA
• Stanford University, Stanford, CA
• C.S. Mott Children’s Hospital, University of Michigan, Ann Arbor, MI
• Washington University School of Medicine, St. Louis, MO
• Northwestern University Feinberg School of Medicine, Chicago, IL
• Children's Hospital Los Angeles, Los Angeles, CA
• Seattle Children’s Hospital, Seattle, WA
• Nemours/Alfred I. Dupont Hospital for Children, Wilmington, DE
• Children's Mercy, Kansas City, MO
• Botswana-UPENN Partnership, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
• Merck & Co., North Wales, PA
• Children’s National Hospital, Washington, D.C.
• Duke Children’s Hospital, Raleigh, NC
• Naval Medical Center, San Diego, CA
• Maria Fareri Children’s Hospital, Valhalla, NY
• Epidemic Intelligence Service, Centers for Disease Control and Prevention

Graduated and prior fellows

• Allison Blatz, MD
• Angela Desmond, MD, PhD
• Maheswari Ekambaram, MD
• Nathan L’Etoile, MD
• Yasaman Fatemi, MD
• Logan Grimes, MD
• Catherine Hayes, MD
• Nadia Hill, MBBCh
• Torsten Joerger, MD
• Ye Jin Kang, MD
• Katie Laycock, MD
• Charmaine Mutucumarana, MD
• William Otto, MD
• Ashley Sobel-Leonard, MD, PhD
• Eleana Vasileiadi, MD
• Karen Hanze Villavicencio, MD

About CHOP

The nation’s first hospital devoted exclusively to the care of children, CHOP has been the birthplace for countless breakthroughs in pediatric medicine since 1855. Families facing complex conditions come to CHOP from all over the world, and our compassionate care and innovation has repeatedly earned us a spot on the U.S. News & World Report's Honor Roll of the nation's best children's hospitals.

The Department of Pediatrics at CHOP is highly regarded nationally and internationally, and is consistently named among the premier academic pediatric departments in the United States.

CHOP’s Research Institute continues to advance breakthrough treatments and innovations that have changed lives and pushed pediatric scientific knowledge forward.

Read more about CHOP’s history and mission, and what makes us a unique place to train.

The history, expertise and compassion that make Children’s Hospital of Philadelphia unique are also what makes it the best place for medical trainees.

The Infectious Diseases faculty are leaders in their fields and many hold prominent operational, clinical, and research roles within CHOP. Examples include the Physician-in-Chief and Chairman of the Department of Pediatrics; AVP Systems Preparedness, Prevention and Response; Medical Director of Infection Prevention and Control; Medical Director of the Antimicrobial Stewardship Program, Department of Pediatrics Associate Chair of Research; and Associate Chief Clinical Research Officer.

Living in Philadelphia

Philadelphia is a vibrant city offering a wealth of history, culture and recreation. Learn more about life in Philadelphia.

Fellowship team and contact information

Fellowship Program Director
Maulin Soneji, MD
Email Dr. Soneji

Associate Program Director
Michael Silverman, MD, PhD
Email Dr. Silverman

Fellowship Program Coordinator
Patrice Sport
215-590-2017
Email Ms. Sport

Chief, Division of Infectious Diseases: Audrey R. Odom John, MD, PhD

Attending Physician: 

How to apply

Our program is seeking physicians who will have completed three years of training in an accredited residency program in general pediatrics. The Infectious Disease Fellowship Program participates in the Electronic Residency Application Service (ERAS). Please visit the ERAS website for an application.

To apply, you will need to upload:

• Personal statement
• Three letters of recommendation
• Dean’s letter
• CV
• Medical school transcript
• USMLE scores
• Graduates of medical schools outside the United States, Canada or Puerto Rico will also need a valid ECFMG certificate, or one that does not expire prior to the start of the fellowship.
• Applicants who are not citizens of the United States will also need a copy of a permanent resident card or a copy of a current, appropriate visa. CHOP will sponsor H-1B visas for select candidates.

The period for submitting applications typically opens July 1 and interviews typically begin several weeks thereafter.

The fellowship directors and division chief review all completed applications and select candidates to invite for in-person interviews. Interviews are typically one day in duration and last from 8 a.m. to 5 p.m. Interviewees will have the opportunity to meet with approximately six to eight faculty members.

The Pediatric Infectious Diseases Fellowship Program participates in the National Resident Matching Program (NRMP). Please visit the NRMP website for more information.

Other requirements

To carry out its mission, it is of critical importance for the Children’s Hospital of Philadelphia (CHOP) to keep our patients, families and workforce safe and healthy and to support the health of our global community. In keeping with this, CHOP has mandated all workforce members (including trainees) on site at any CHOP location for any portion of their time be vaccinated for COVID-19 as a condition of employment.

This mandate also applies to workforce members or trainees performing work for CHOP at non-CHOP locations. Additionally, all workforce members based in or regularly scheduled to work at any New Jersey location are mandated to be both vaccinated and boosted for COVID-19, with booster timing consistent with applicable guidelines. The CHOP COVID-19 vaccine mandate is in alignment with applicable local, state and federal mandates. CHOP also requires all workforce members and trainees who work in patient care buildings or who provide patient care to receive an annual influenza vaccine. Employees may request exemption consideration for CHOP vaccine requirements for valid religious and medical reasons. Please note start dates may be delayed until candidates are fully immunized or valid exemption requests are reviewed. In addition, candidates other than those in positions with regularly scheduled hours in New Jersey, must attest to not using tobacco products.

Children's Hospital of Philadelphia is an equal opportunity employer. We do not discriminate on the basis of race, color, gender, gender identity, sexual orientation, age, religion, national or ethnic origin, disability, protected veteran status or any other protected category. CHOP is a VEVRAA Federal Contractor seeking priority referrals for protected veterans.

CHOP is committed to building an inclusive culture where employees feel a sense of belonging, connection, and community within their workplace. We are a team dedicated to fostering an environment that allows for all to be their authentic selves. We are focused on attracting, cultivating, and retaining diverse talent who can help us deliver on our mission to be a world leader in the advancement of healthcare for children.

We strongly encourage all candidates of diverse backgrounds and lived experiences to apply.

Our commitment to Inclusion and belonging

Our division values diversity of all kinds among all of our staff. The Children's Hospital of Philadelphia provides support to all employees through the Office of Inclusion and Belonging in partnership with trainee-focused efforts from CHOP GME, the CHOP Multicultural Physicians, Alliance, Providers of Pride at CHOP, and additional Employee Resource Groups.