A photo of Mary Staat.

Mary Allen Staat, MD, MPH

  • Director, International Adoption Center
  • Professor, UC Department of Pediatrics



I specialize in infectious diseases, international adoption and travel medicine. As a physician, I have a desire to help prevent, treat and cure infections in children. Dr. Arthur Frank, a preventive medicine specialist, inspired me to consider public health as a career. Drs. Larry Pickering and Ralph Feigin encouraged me to provide clinical care and pursue research in pediatrics.

My research involves the epidemiology of contagions in children. For instance, I am very interested in learning when children are infected with certain pathogens, how the infection impacts them, and how their immune system responds to it. To uncover answers to our questions, we perform surveillance and cohort studies in mothers and babies.

Our research goals are to better understand and identify the immune response to the flu in babies who were exposed to influenza for the first time either from a natural infection or from the flu vaccine. By understanding this response, we hope to develop a universal influenza vaccine.

I thought we only had part of the story with certain pathogens and that we only knew the typical presentation or researched the children with the most relentless symptoms. I was curious to answer these questions: Why do some children get an infection and have mild symptoms, while others may die from that same infection? Why do some children have a good response to a vaccine and others do not? I wanted to get the whole story via my research studies.

My colleagues and I are thankful for families who participate in our studies and help us learn how to prevent infections in the future. We are truly passionate about the research we are pursuing.

Our team has been awarded a large Cooperative Agreement grant from the National Institutes of Health (NIH) to assess influenza in a maternal infant cohort in Cincinnati and Mexico City. Also, I was named Kulkarni Endowed Chair of Infectious Diseases at Cincinnati Children’s Hospital Medical Center.

My research has been published in various respected journals, including American Journal of Infection Control, Clinical Infectious Diseases, Pediatrics International, and Pediatric Blood and Cancer.

MD: University of Kentucky, Lexington, Ky., 1986.

MPH: Johns Hopkins University, Baltimore, Md., 1991.

Residency: Pediatrics, Baylor College of Medicine, Houston, Texas, 1986-1989; Preventive Medicine, Johns Hopkins University, Baltimore, Md., 1990-1994.

Fellowship: Infectious Diseases, Baylor College of Medicine, Houston, Texas, 1989-1990; Epidemiology, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Rockville, Md., 1990-1993.

Certification: Pediatrics, 1989; Preventive Medicine, 1996; Pediatric Infectious Diseases, 1999.


Helicobacter pylori; rotavirus epidemiology; travel medicine; infectious diseases of international adoptees

Services and Specialties

Infectious Diseases, International Adoption


Epidemiology of enteric infections; surveillance of infectious diseases

Research Areas

Infectious Diseases

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Hantavirus Pulmonary Syndrome in an Adolescent from North Dakota. Hall, AD; Fayad, D; Staat, MA. The Pediatric Infectious Disease Journal. 2024; 43:e212-e214.

Endemic Coronavirus Infections are Associated with Strong Homotypic Immunity in a US Cohort of Children from Birth to 4 Years. Morrow, AL; Payne, DC; Conrey, SC; McMorrow, M; McNeal, MM; Niu, L; Burrell, AR; Schlaudecker, EP; Mattison, C; Burke, RM; Wrammert, J; Atherton, LJ; Thornburg, NJ; Staat, MA. Journal of the Pediatric Infectious Diseases Society. 2024; 13:265-273.

Accuracy of Influenza ICD-10 Diagnosis Codes in Identifying Influenza Illness in Children. Antoon, JW; Stopczynski, T; Amarin, JZ; Stewart, LS; Boom, JA; Sahni, LC; Michaels, MG; Williams, JV; Englund, JA; Klein, EJ; Spieker, AJ; Grijalva, CG; Olson, SM; Halasa, NB. JAMA Network Open. 2024; 7:e248255.

Durability of Original Monovalent mRNA Vaccine Effectiveness Against COVID-19 Omicron-Associated Hospitalization in Children and Adolescents - United States, 2021-2023. Zambrano, LD; Newhams, MM; Simeone, RM; Payne, AB; Wu, M; Orzel-Lockwood, AO; Halasa, NB; Calixte, JM; Pannaraj, PS; Mongkolrattanothai, K; De Romero, AV; Joshi, S; Tomcany, M; Twinem, N. Morbidity and Mortality Weekly Report. 2024; 73:330-338.

Early Estimate of Nirsevimab Effectiveness for Prevention of Respiratory Syncytial Virus-Associated Hospitalization Among Infants Entering Their First Respiratory Syncytial Virus Season - New Vaccine Surveillance Network, October 2023-February 2024. Moline, HL; Tannis, A; Toepfer, AP; Williams, JV; Boom, JA; Englund, JA; Halasa, NB; Staat, MA; Weinberg, GA; Selvarangan, R; Peri, S; Sasidharan, A; Johnson, M; Dauer, K. Morbidity and Mortality Weekly Report. 2024; 73:209-214.

Characteristics and Clinical Outcomes of Vaccine-Eligible US Children Under-5 Years Hospitalized for Acute COVID-19 in a National Network. Zambrano, LD; Newhams, MM; Simeone, RM; Fleming-Dutra, KE; Halasa, N; Wu, M; Orzel-Lockwood, AO; Kamidani, S; Pannaraj, PS; Chiotos, K; Bline, KE; Hymes, SR; Campbell, AP; Randolph, AG. The Pediatric Infectious Disease Journal. 2024; 43:242-249.

Respiratory Syncytial Virus-Associated Hospitalizations Among Children <5 Years Old: 2016 to 2020. Curns, AT; Rha, B; Lively, JY; Sahni, LC; Englund, JA; Weinberg, GA; Halasa, NB; Staat, MA; Selvarangan, R; Michaels, M; Langley, G; Gerber, SI; Hall, AJ; McMorrow, ML. Pediatrics. 2024; 153:e2023062574.

Maternal Vaccine Effectiveness Against Influenza-Associated Hospitalizations and Emergency Department Visits in Infants. Sahni, LC; Olson, SM; Halasa, NB; Stewart, LS; Michaels, MG; Williams, JV; Englund, JA; Klein, EJ; Staat, MA; Schlaudecker, EP; Szilagyi, PG; Boom, JA; Patel, MM; Muñoz, FM. JAMA Pediatrics. 2024; 178:176-184.

Obesity and Prenatal Intention as Predictors of Meeting Breastfeeding Recommendations in an Urban Birth Cohort. Conrey, SC; Burrell, AR; Staat, MA; Washington, DM; Taft, DH; Nommsen-Rivers, L; Morrow, AL. Breastfeeding Medicine. 2024; 19:98-108.

SARS-CoV-2 Epidemiology and COVID-19 mRNA Vaccine Effectiveness Among Infants and Children Aged 6 Months-4 Years - New Vaccine Surveillance Network, United States, July 2022-September 2023. Tannis, A; Englund, JA; Perez, A; Harker, EJ; Allen Staat, M; Schlaudecker, EP; Halasa, NB; Stewart, LS; Williams, JV; Michaels, MG; Zhou, Y; McMorrow, ML; Klein, EJ; Moline, HL. Morbidity and Mortality Weekly Report. 2023; 72:1300-1306.

From the Blog

Why COVID-19 Tends to be Less Severe in Young Children
Infectious Diseases and Vaccines

Why COVID-19 Tends to be Less Severe in Young Children

Mary Allen Staat, MD, MPH10/13/2023

Vaccine ‘Highly Effective’ in Preventing Adolescent COVID-19 Hospitalization
Infectious Diseases and Vaccines

Vaccine ‘Highly Effective’ in Preventing Adolescent COVID-19 Hospitalization

Mary Allen Staat, MD, MPH10/21/2021

$30M Grant Fuels Hunt for Universal Flu Vaccine
Infectious Diseases and Vaccines

$30M Grant Fuels Hunt for Universal Flu Vaccine

Mary Allen Staat, MD, MPH7/3/2019

The PREVAIL Cincinnati Birth Cohort: Breastfeeding and Sleep Analysis

The PREVAIL Cincinnati Birth Cohort: Breastfeeding and Sleep Analysis

Mary Allen Staat, MD, MPH7/3/2019

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