Maldonado Epi Group

The research lab of Dr. Bonnie Maldonado


Welcome to the website of Dr. Yvonne (Bonnie) Maldonado's Pediatric Infectious Disease Research Group within the Department of Pediatrics, Division of Infectious Diseases at the Stanford University School of Medicine.

We are involved in a variety local and international epidemiology and prevention activities focusing on HIV/AIDS, polio, COVID-19, and vaccines.

Bonnie Maldonado, MD, a professor of pediatrics and of epidemiology and population health, senior associate dean of faculty development and diversity, and the Taube Professor in Global Health and Infectious Diseases, was elected for her contributions in the epidemiology and control of pediatric infectious diseases, including polio and measles elimination from the Americas, prevention of maternal-infant HIV transmission, and the national COVID-19 pandemic response.

"Raw milk, along with other raw dairy products like unpasteurized ice creams, yogurts and cheeses, can harbor bacteria that cause common food-borne illnesses — such as salmonella, listeria, campylobacter and E. coli. Germs may linger on a cow’s udders or in the dirt around them, or on the hands of people who milk them, which can then contaminate the milk, said Dr. Yvonne Maldonado, a professor of pediatrics, infectious diseases and epidemiology at Stanford Medicine."

Maldonado team lunch, June 2023

June 15, 2023

Dr. Maldonado's clinical and vaccine trial teams join together for a team lunch in June

"No link between DDT, polio

Dr. Yvonne Maldonado, a Stanford University professor who studies global health, infectious diseases and epidemiology, said the notion that polio could be caused by DDT is wrong, flying in the face of more than a century of science and evidence."

The KPIX CBS SF Bay Area team checks in with Dr. Yvonne Maldonado to talk about the ongoing flu season, and why it has hospitals under such pressure. (12/7/2022)

On December 5, 2022, as part of the Stanford Center for Innovation in Global Health (CIGH) Faculty in Focus Series, Dr. Yvonne (Bonnie) Maldonado shared her career journey in medicine, infectious diseases, public health, and global health while discussing the COVID-19 and mPox pandemics.

The American Pediatric Society (APS) is pleased to announce Yvonne (Bonnie) Maldonado, MD, as the 2023 APS John Howland Award recipient, the highest honor bestowed by the APS. The prestigious award signifies the society’s recognition of Dr. Maldonado for her significant contributions to advancing child health and the profession of pediatrics.

Researchers at Stanford Medicine are projected to receive close to $15 million over a four-year period from the National Institutes of Health to study long-lasting patterns of COVID-19-related symptoms, commonly known as long COVID. 

Stanford Physician and Researcher Yvonne "Bonnie" Maldonado, MD recounts the early days of the Covid-19 Pandemic and how she and Stanford Medicine responded.

Jonathan Altamirano discusses SARS-CoV2 study on JAMA Network Open Live

June 16, 2020

Jonathan Altamirano, MS and Prasanthi Govindarajan, MBBS, MAS join JAMA Network Open Editors to discuss a prognostic study comparing the diagnostic equivalence of patient-collected lower nasal specimens with that of health care worker–collected oropharyngeal specimens for sudden acute respiratory syndrome #coronavirus 2 (SARS-CoV-2) testing. 

Facebook Live with Dr. Yvonne Maldonado

May 4, 2020

Mark Zuckerberg and Dr. Priscilla Chan chat with Dr. Yvonne Maldonado, a vaccine expert at Stanford Medical School, about COVID-19 serology testing and what keeps her hopeful during this challenging time.

Stanford teams with UCSF, Chan Zuckerberg Biohub to study prevalence of COVID-19 in San Francisco Bay Area

April 29, 2020

The nine-month collaborative studies, funded by the Chan Zuckerberg Initiative, will track the rate of new regional infections, define population immunity levels and help inform how to safely reopen California’s economy.

Maldonado mentee and lab alumna reflects on the impact of a summer internship

An update from Maldonado Epi lab aluma and mentee, Sara Bolivar Wagers, on the impact of her time in the lab.

Clinical Infectious Diseases supplement on the polio endgame

The November 2018 supplement to the Clinical Infectious Diseases journal highlighted the latest in polio research, featuring work by the Maldonado epi lab and colleagues around the world. The publication was supported by the Bill & Melinda Gates Foundation and coordinated by Senior Data Analyst, Jonathan Altamirano (Stanford '15). Read all the articles online.

Maldonado Q&A with the Stanford Daily

The Stanford Daily featured a Q&A with Dr. Bonnie Maldonado following her receipt of the Stanford medicine Alumni RISE Award. Read the full discussion online.

Dr. Maldonado wins Stanford Medicine Alumni RISE Award

Dr. Bonnie Maldonado '81 received the 2018 Reach Inspire Serve Engage (RISE) award from the Stanford Medicine Alumni Association. Click to watch the video tribute.

Global Health Research Convening 2018

Research Data Analyst, Jonathan Altamirano, presents findings from a spatial analysis of polio transmission from the Maldonado lab's study in Mexico.

Yvonne Maldonado, Stanford's Senior Associate Dean for Faculty Development and Diversity, defines diversity and makes a case for its importance to excellent medical education at Stanford MedicineX 2018.

Dr. Maldonado explains the SPHERE project at the 2018 UCSF Developmental Disabilities Update.

Race, Policing, and Public Health Symposium

Claude Steele, PhD, Victor Rios, PhD, and Bonnie Maldonado, MD at the March 6, 2017 symposium co-sponsored by the Stanford School of Medicine and School of Law.

Videos available online.

(Photos by: Paul Keitz Photography)

Issues for the Endgame of Polio Eradication

Yvonne Maldonado presents at the 3rd annual Stanford Global Health Research Convening on January 18, 2017.

Bonnie Maldonado at the Big Data in Biomedicine conference

Dr. Maldonado is interviewed at the 2016 Big Data in Biomedicine conference about the role of big data in fighting Zika virus and other public health problems.

Microbes and Pregnancy Panel at ChildX 2016

Dr. Maldonado moderated a panel on Microbes and Pregnancy at ChildX 2016. The Panel featured Stanford's own Dr. Desiree LaBeaud, Dr. David Relman, and Dr. Philip Tarr from Washington University in St. Louis.

Updated 1/24/2022

Dr. Maldonado on the "In the Bubble" Podcast

Polio has been detected in New York wastewater following the case of a man infected and paralyzed by the virus in July. How much is the virus circulating and what does that mean for you and young children at greatest risk? Andy speaks with New York State Health Commissioner Dr. Mary T. Bassett and Stanford Professor of Pediatrics Dr. Yvonne “Bonnie” Maldonado about how a disease eliminated from the Western Hemisphere in 1994 returned and what we must do now.

Listen here: In the Bubble with Andy Slavitt

Global Child Health

Dr. Maldonado directs the Global Child Health program, which seeks to improve the health and wellbeing of children worldwide.

Faculty Development and Diversity

Stanford Precision Health for Ethnic and Racial Equity

Dr. Maldonado is PI of the NIH-funded SPHERE Center at Stanford, part of a nation-wide network of centers advancing precision health.