Karen Marie Puopolo, MD, PhD

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Professor of Pediatrics (Neonatology & Newborn Services) at the Children's Hospital of Philadelphia
Attending Physician (Neonatology), The Children's Hospital of Philadelphia, Philadelphia, PA
Medical Director, NICU and Well Nursery, Pennsylvania Hospital
Research Faculty, Clinical Futures (former Center for Pediatric Clinical Effectiveness), The Children's Hospital of Philadelphia, Philadelphia, PA
Section Chief, Newborn Medicine, Pennsylvania Hospital, Philadelphia, PA
Department: Pediatrics

Contact information
Children's Hospital of Philadelphia
Newborn Care at Pennsylvania Hospital
800 Spruce Street - 2nd Floor
Philadelphia, PA 19107
Office: 215-829-3301
Fax: 215-829-7211
Education:
BS (Physics and Applied Physics)
Yale University, 1985.
PhD (Cellular and Molecular Physiology)
Tufts University School of Graduate Biomedical Sciences, 1993.
MD (Medicine)
Tufts University School of Medicine, 1993.
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Description of Clinical Expertise

I have 25 years of experience as a practicing neonatologist in large perinatal centers; and significant experience conducting research in neonatal infectious diseases and mentoring clinical and research trainees. I spent the first 14 years of my academic career at Boston Children’s Hospital, Brigham and Women’s Hospital and Harvard Medical School, and was recruited to the University of Pennsylvania and Children’s Hospital of Philadelphia (CHOP) in 2014. I currently serve as Section Chief for Newborn Medicine at Pennsylvania Hospital; work clinically at CHOP and Pennsylvania Hospital.

Description of Other Expertise

I am committed to medical research training in newborn medicine and have trained multiple pre- and post-doctoral fellows during my career. I currently serve as primary mentor for one physician who has completed a K23 grant and is now an R01-funded independent investigatory at Penn and CHOP. I serve at the primary mentor for another physician with a current K08 grant and for a third physician when she was supported by a T32 grant and now has a well-scored K23 grant awaiting funding. In addition, I am member of the advisory committee for a 4th physician who was recently awarded a K08 grant.

Description of Research Expertise

I began my neonatal research career as a laboratory-based scientist investigating mechanisms of virulence in Group B Streptococcus, an important neonatal microbial pathogen. My interests evolved to focus on neonatal sepsis risk assessment. In collaboration with Dr. Gabriel Escobar, I performed a series of studies addressing the risk of neonatal early-onset sepsis among term and late preterm infants, and developed risk prediction models based on objective data available at the moment of birth and newborn clinical condition. We transformed these Bayesian multivariate models into a practical “calculator,” providing neonatal clinicians a Sepsis Risk Score to estimate individual infant risk and guide care decisions. Our work catalyzed widespread adoption of these models and fundamentally changed national perinatal practice. My research group currently focuses on sepsis risk assessment among preterm infants; on national infection epidemiology and antibiotic practice; and on determining the longer-term health outcomes of perinatal antibiotics exposures. During the SARS-CoV-2 pandemic, my research group leveraged our existing infrastructure to conduct studies of maternal COVID seroepidemiology and transplacental antibody transfer. My research group are all faculty in the CHOP Clinical Futures program. Finally, I am the local principal investigator for the NIH-funded Neonatal Research Network. Pennsylvania Hospital has the largest perinatal center in Philadelphia and is an active site for clinical research, and specifically for Neonatal Research Network studies.

Selected Publications

Koebnick C, Mukhopadhyay S, Getahun D, Tartof SY, Xiang AH, Puopolo KM, Sidell MA. : The Contributions of delivery mode and intrapartum antibiotic exposure to body mass index among children through 5 years of age. Eur J Obstet Gynecol Reprod Biol 311: 113984, Jul 2025 Notes: Epub 2025 Apr 20.

Carlo WA, Eichenwald EC, Carper BA, Bell EF, Keszler M, Patel RM, Sánchez PJ, Goldberg RN, D'Angio CT, Van Meurs KP, Hibbs AM, Ambalavanan N, Cosby SS, Newman NS, Vohr BR, Walsh MC, Das A, Ohls RK, Fuller J, Rysavy MA, Ghavam S, Brion LP, Puopolo KM, Moore R, Baack ML, Colaizy TT, Baserga M, Osman AF, Merhar SL, Poindexter BB, DeMauro SB, Kumar V, Cotten CM; Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network.: Extended Caffeine for Apnea in Moderately Preterm Infants: The MoCHA Randomized Clinical Trial. JAMA 333(24): 2154-2163, June 2025.

Heisel T, Gonia S, Dillon A, Hoops SL, Al-Ghalith GA, Gohl D, Mukhopadhyay S, Puopolo K, Kennedy P, Sadowsky MJ, Knights D, Johnson AJ, Gerber JS, Gale CA. : Gut mycobiome maturation and its determinants during early childhood: a comparison of ITS2 amplicon and shotgun metagenomic sequencing approaches. Front Microbiol 16: 1539750, May 2025.

Coggins SA, Tan S, Puopolo KM, Mukhopadhyay S: Association of prolonged rupture of membranes with late-onset infections in extremely preterm infants. Pediatric Academic Societies Apr 2025.

Coggins SA, Wade KC, Watt KM, Downes KJ, Puopolo KM. : Vancomycin Concentrations in Umbilical Cord Blood After Intrapartum Exposure. Obstet Gynecol 145(4): 435-438, Apr 2025 Notes: Epub ahead of print Feb 2025.

Faix RG, Laptook AR, Shankaran S, et al.; for the Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network: Whole-Body Hypothermia for Neonatal Encephalopathy in Preterm Infants 33 to 35 Weeks' Gestation: A Randomized Clinical Trial. JAMA Pediatr 179(4), Apr 2025.

Shankaran S, Laptook AR, Guimaraes C, et al. for the Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network: NICHD Magnetic Resonance Brain Imaging Score in Term Infants With Hypoxic-Ischemic Encephalopathy: A Secondary Analysis of a Randomized Clinical Trial. JAMA Pediatr. 179(4), Apr 2025.

Coggins SA, Garber SJ, Puopolo KM. : Congenital Cytomegalovirus Detection Following Pennsylvania Hearing-Targeted Screening Legislation. Pediatric Academic Societies Apr 2025.

Flannery DD, Dudley E, Mukhopadhyay S, Zevallos Barboza A, Weissman S, Puopolo KM: SIREN: Surveillance of Invasive and Resistant E. coli in Neonates. Pediatric Academic Societies annual meeting Apr 2025. Pediatric Academic Societies Apr 2025.

May MF, Flannery DD, Puopolo KM, Mukhopadhyay S, Zevallos Barboza A, Garber SJ: Sustainability and safety of an early-onset sepsis risk-stratification guideline for empiric antibiotics among very low birth weight infants. Pediatric Academic Societies Apr 2025.

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Last updated: 07/29/2025
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