

Public Health On Call
The Johns Hopkins Bloomberg School of Public Health
Evidence and experts to help you understand today's public health news—and what it means for tomorrow.
Episodes
Mentioned books

Sep 25, 2025 • 14min
951 - Dr. Debra Houry on Her Decision to Leave the CDC
 About this episode: Last week, Dr. Debra Houry was testifying before Congress. Today, she's talking with Dr. Josh Sharfstein on Public Health On Call. In this episode: Dr. Houry reflects on her time at the CDC, the drastic changes at the agency under Health and Human Services Secretary Robert F. Kennedy Jr., and what she hopes her testimony can do to uphold quality public health. Guest:  Dr. Debra Houry, MPH, most recently served as the Chief Medical Officer and Deputy Director for Program and Science at the CDC. She has also worked as a professor at both the Emory University School of Medicine and the Rollins School of Public Health, and as an emergency department physician. Host: Dr. Josh Sharfstein is distinguished professor of the practice in Health Policy and Management, a pediatrician, and former secretary of Maryland's Health Department. Show links and related content:   Testimony from Debra Houry, M.D., M.P.H.—Senate Committee on Health, Education, Labor, and Pensions   Senior CDC officials resign after Monarez ouster, cite concerns over scientific independence—CBS News   A Brief Update: CDC in Crisis—Public Health On Call (September 2025)   Transcript information: Looking for episode transcripts? Open our podcast on the Apple Podcasts app (desktop or mobile) or the Spotify mobile app to access an auto-generated transcript of any episode. Closed captioning is also available for every episode on our YouTube channel. Contact us: Have a question about something you heard? Looking for a transcript? Want to suggest a topic or guest? Contact us via email or visit our website. Follow us:   @PublicHealthPod on Bluesky   @JohnsHopkinsSPH on Instagram   @JohnsHopkinsSPH on Facebook   @PublicHealthOnCall on YouTube   Here's our RSS feed   Note: These podcasts are a conversation between the participants, and do not represent the position of Johns Hopkins University. 

Sep 24, 2025 • 19min
950 - Michael Osterholm on Vaccine Policy in 2025
 About this episode: An overwhelming majority of Americans support vaccines, particularly routine childhood immunizations for preventable diseases like measles, mumps, and rubella. But misinformation is obscuring the scientific evidence on vaccine safety and efficacy. In this episode: Michael Osterholm, one of the founding members of the Vaccine Integrity Project, talks about his work to uplift science-backed research and offers a readout on the most recent meeting of the CDC's Advisory Committee on Immunization Practices. Guest: Michael Osterholm, PhD, MPH, is an author and epidemiologist who serves as the director of the Center for Infectious Disease Research and Policy at the University of Minnesota. He is one of the founders of the Vaccine Integrity Project, an initiative safeguarding vaccine access by reviewing and sharing scientific evidence. Host:  Stephanie Desmon, MA, is a former journalist, author, and the director of public relations and communications for the Johns Hopkins Center for Communication Programs. Show links and related content:   CDC advisers weaken COVID vaccine recommendations but stop short of requiring prescriptions—CIDRAP   Poll: 79% of Americans Support Routine Childhood Vaccine Requirements—de Beaumont   Concerned about US vaccine misinformation and access, public health experts start Vaccine Integrity Project—CNN   Transcript information: Looking for episode transcripts? Open our podcast on the Apple Podcasts app (desktop or mobile) or the Spotify mobile app to access an auto-generated transcript of any episode. Closed captioning is also available for every episode on our YouTube channel. Contact us: Have a question about something you heard? Looking for a transcript? Want to suggest a topic or guest? Contact us via email or visit our website. Follow us:   @PublicHealthPod on Bluesky   @JohnsHopkinsSPH on Instagram   @JohnsHopkinsSPH on Facebook   @PublicHealthOnCall on YouTube   Here's our RSS feed   Note: These podcasts are a conversation between the participants, and do not represent the position of Johns Hopkins University. 

Sep 22, 2025 • 16min
949 - A Roadmap for Helping Adolescents Thrive
 Lisa Lawson, President and CEO of the Annie E. Casey Foundation and a leading voice on adolescent development, shares insights from her book on the science of the adolescent brain. She tackles common misconceptions about teenagers, highlighting that their behavior is a normal part of development influenced by relationships and environment. Lawson offers practical strategies for supporting youth, such as opportunity-based probation and apprenticeships, and shares valuable advice for parents and educators to help adolescents thrive. 

Sep 17, 2025 • 16min
948 - Recent "Expert Panels" Could Undermine the FDA's Credibility
 About this episode: The FDA has long convened scientifically rigorous advisory committees to review data and offer recommendations for regulating a range of food and drug products. However, it has recently pulled back and leaned heavily into ad-hoc "expert panels" that are not held to the same standards. In this episode: Caleb Alexander, an epidemiologist and drug safety expert who has served on over a dozen FDA advisory committees, raises concerns about the lack of transparency and accountability in these new panels and suggests that their lax standards might undermine the agency's credibility. Guest: Dr. G. Caleb Alexander, MS, is a practicing internist and drug safety expert at the Johns Hopkins Bloomberg School of Public Health. Host:  Lindsay Smith Rogers, MA, is the producer of the Public Health On Call podcast, an editor for Expert Insights, and the director of content strategy for the Johns Hopkins Bloomberg School of Public Health. Show links and related content:   The FDA's pivot from ad comms to 'expert' panels is bad medicine—STAT   An FDA panel spread misinformation about SSRI use in pregnancy, alarming doctors—NPR   Learn About FDA Advisory Committees—FDA   Transcript Information: Looking for episode transcripts? Open our podcast on the Apple Podcasts app (desktop or mobile) or the Spotify mobile app to access an auto-generated transcript of any episode. Closed captioning is also available for every episode on our YouTube channel. Contact us: Have a question about something you heard? Looking for a transcript? Want to suggest a topic or guest? Contact us via email or visit our website. Follow us:   @PublicHealthPod on Bluesky   @JohnsHopkinsSPH on Instagram   @JohnsHopkinsSPH on Facebook   @PublicHealthOnCall on YouTube   Here's our RSS feed   Note: These podcasts are a conversation between the participants, and do not represent the position of Johns Hopkins University. 

Sep 16, 2025 • 15min
947 - "Taxpayer Money Went to Buy Food to Feed People… Now It's Being Burned"
 About this episode: Over the past few months, USAID has been dismantled, forcing the abandonment of aid projects and flushing away millions of dollars worth of food and medicine. In this episode: Journalist Hana Kiros talks about her reporting on the thousands of USAID-funded projects that have been terminated, the potential PR nightmare for the U.S., and what is happening to lifesaving supplies. Guest: Hana Kiros is a writer and an assistant editor at The Atlantic, where she covers human rights and technology. Host:  Stephanie Desmon, MA, is a former journalist, author, and the director of public relations and communications for the Johns Hopkins Center for Communication Programs. Show links and related content:   Inside the USAID Fire Sale—The Atlantic   Sudden Impact: When Health Programs End—Hopkins Bloomberg Public Health Magazine   What Foreign Aid Means for National Security—Public Health On Call (February 2025)   Transcript information: Looking for episode transcripts? Open our podcast on the Apple Podcasts app (desktop or mobile) or the Spotify mobile app to access an auto-generated transcript of any episode. Closed captioning is also available for every episode on our YouTube channel. Contact us: Have a question about something you heard? Looking for a transcript? Want to suggest a topic or guest? Contact us via email or visit our website. Follow us:   @PublicHealthPod on Bluesky   @JohnsHopkinsSPH on Instagram   @JohnsHopkinsSPH on Facebook   @PublicHealthOnCall on YouTube   Here's our RSS feed   Note: These podcasts are a conversation between the participants, and do not represent the position of Johns Hopkins University. 

Sep 15, 2025 • 16min
946 - Baltimore's Back-to-Back Mass Overdoses
 About this episode: This July, a dangerous influx of opioids triggered two mass overdose events in the Penn North neighborhood of Baltimore. A swift and nimble response from the city and community stakeholders resulted in zero fatalities. In this episode: Dr. Letitia Dzirasa and Sara Whaley from the City of Baltimore explain what happened, detail the multipronged emergency response, and share how the city plans to move forward in addressing the opioid crisis. Guest:  Dr. Letitia Dzirasa is the Deputy Mayor of Health and Human Services with the City of Baltimore.  Sara Whaley, MPH, MSW, is the executive director of the City of Baltimore's Overdose Response Team. Host:  Lindsay Smith Rogers, MA, is the producer of the Public Health On Call podcast, an editor for Expert Insights, and the director of content strategy for the Johns Hopkins Bloomberg School of Public Health. Show links and related content:   Overdose Response Strategic Plan—City of Baltimore   Community leaders, experts address Baltimore's overdose crisis—WEAA   Baltimore mass overdose: 'Coordinated neighborhood stabilization response' launched in Penn-North—WBAL   Transcript information: Looking for episode transcripts? Open our podcast on the Apple Podcasts app (desktop or mobile) or the Spotify mobile app to access an auto-generated transcript of any episode. Closed captioning is also available for every episode on our YouTube channel. Contact us: Have a question about something you heard? Looking for a transcript? Want to suggest a topic or guest? Contact us via email or visit our website. Follow us:   @PublicHealthPod on Bluesky   @JohnsHopkinsSPH on Instagram   @JohnsHopkinsSPH on Facebook   @PublicHealthOnCall on YouTube   Here's our RSS feed   Note: These podcasts are a conversation between the participants, and do not represent the position of Johns Hopkins University. 

Sep 11, 2025 • 15min
945 - Keeping Cool in One of America's Hottest Cities
 About this episode: Through the summer, the city of Phoenix consistently hits temperatures upwards of 110 degrees, creating dire conditions for vulnerable populations like outdoor workers and those with substance use disorders. In this episode: Phoenix Mayor Kate Gallego and City Councilwoman Kesha Hodge Washington detail the city's extreme heat challenges, how other communities can deal with rising temperatures, and the successful cooling interventions championed by local leaders in the Valley of the Sun. Guest: Kate Gallego is the 62nd mayor of Phoenix, AZ. During her time in office, she has focused on diversifying the city's economy, investing in infrastructure, and forwarding sustainability. Kesha Hodge Washington is the District 8 city councilmember for the city of Phoenix. She serves on the Audit Committee, the Economic Development and Housing and Transportation Infrastructure and Planning Subcommittees. Host:  Stephanie Desmon, MA, is a former journalist, author, and the director of public relations and communications for the Johns Hopkins Center for Communication Programs. Show links and related content:   How Climate Change and Extreme Weather Can Hurt Your Health—U.S. News & World Report   Drop in Heat-Related Deaths Show Importance of Heat Relief Sites Efforts—City of Phoenix   Extreme Heat Hazards—Hopkins Bloomberg Public Health Magazine   Transcript information: Looking for episode transcripts? Open our podcast on the Apple Podcasts app (desktop or mobile) or the Spotify mobile app to access an auto-generated transcript of any episode. Closed captioning is also available for every episode on our YouTube channel. Contact us: Have a question about something you heard? Looking for a transcript? Want to suggest a topic or guest? Contact us via email or visit our website. Follow us:   @PublicHealthPod on Bluesky   @JohnsHopkinsSPH on Instagram   @JohnsHopkinsSPH on Facebook   @PublicHealthOnCall on YouTube   Here's our RSS feed   Note: These podcasts are a conversation between the participants, and do not represent the position of Johns Hopkins University. 

Sep 10, 2025 • 16min
944 - How Credit Scores Impact Your Health
 About this episode: Credit scores are more than just a number—they can determine your ability to access critical financial assets like loans, leases, and jobs that, in turn, have a huge impact on your health. In this episode: Professor Catherine Ettman shares new research that explores the relationship between low credit scores and mental health, and discusses a recent ruling reinstating medical debt as a metric of creditworthiness. Guest: Catherine K. Ettman, PhD, is an assistant professor in Health Policy and Management at the Johns Hopkins Bloomberg School of Public Health, where she studies population mental health. Host:  Stephanie Desmon, MA, is a former journalist, author, and the director of public relations and communications for the Johns Hopkins Center for Communication Programs. Show links and related content:   Americans' medical debt can stay in credit reports, judge rules. What does that mean?—NPR   Area-level credit scores and symptoms of depression and anxiety in adults—American Journal of Epidemiology   An Asset Framework to Guide Nonhealth Policy for Population Health—JAMA Health Forum   Transcript information: Looking for episode transcripts? Open our podcast on the Apple Podcasts app (desktop or mobile) or the Spotify mobile app to access an auto-generated transcript of any episode. Closed captioning is also available for every episode on our YouTube channel. Contact us: Have a question about something you heard? Looking for a transcript? Want to suggest a topic or guest? Contact us via email or visit our website. Follow us:   @PublicHealthPod on Bluesky   @JohnsHopkinsSPH on Instagram   @JohnsHopkinsSPH on Facebook   @PublicHealthOnCall on YouTube   Here's our RSS feed   Note: These podcasts are a conversation between the participants, and do not represent the position of Johns Hopkins University. 

Sep 8, 2025 • 14min
943 - Who Can Get a COVID Vaccine This Fall?
 About this episode: The FDA and CDC are tightening eligibility requirements for COVID-19 vaccines this year, pushing effective treatments out of reach for millions of Americans including young children. In this episode: Dr. Fiona Havers, formerly a senior adviser on vaccine policy at the CDC, draws on recent hospitalization rates to identify who is most at risk for severe COVID-19 infection and in need of immunization for protection. Guest:  Dr. Fiona Havers, MHS, is an infectious disease physician, a medical epidemiologist, and an expert on vaccine-preventable respiratory diseases and vaccine policy. She previously led the Respiratory Virus Hospitalization Surveillance Network Team at the CDC's National Center for Immunization and Respiratory Diseases. Host: Dr. Josh Sharfstein is distinguished professor of the practice in Health Policy and Management, a pediatrician, and former secretary of Maryland's Health Department. Show links and related content:   Recent FDA, CDC changes to COVID vaccination guidelines lead to confusion—WBAL   Covid-19 vaccine license change: 12 key questions answered—Your Local Epidemiologist   Despite federal shift, state health officials encourage COVID vaccines for pregnant women—Stateline   Transcript information: Looking for episode transcripts? Open our podcast on the Apple Podcasts app (desktop or mobile) or the Spotify mobile app to access an auto-generated transcript of any episode. Closed captioning is also available for every episode on our YouTube channel. Contact us: Have a question about something you heard? Looking for a transcript? Want to suggest a topic or guest? Contact us via email or visit our website. Follow us:   @PublicHealthPod on Bluesky   @JohnsHopkinsSPH on Instagram   @JohnsHopkinsSPH on Facebook   @PublicHealthOnCall on YouTube   Here's our RSS feed   Note: These podcasts are a conversation between the participants, and do not represent the position of Johns Hopkins University. 

Sep 4, 2025 • 18min
942 - Could One Health Prevent the Next Pandemic?
 About this episode: Animal-to-human transmission of bacteria and viruses have triggered outbreaks of diseases like avian influenza, COVID-19, and Ebola. A public health approach called One Health can help us to better understand these cases—and possibly help prevent future pandemics. In this episode: Professors Emily Gurley and Raina Plowright explain how One Health investigations work, why they're an effective tool for addressing spillover events, and a new One Health Coursera course that you can preview for free: https://www.coursera.org/learn/one-health-investigations-of-outbreaks-and-spillover-events Guest: Emily S. Gurley, PhD, MPH, is a professor in Epidemiology at the Johns Hopkins Bloomberg School of Public Health, where she focuses on infectious disease and outbreak investigation. Raina K. Plowright, PhD, MS, is a veterinarian and the Rudolf J. and Katharine L. Steffen Professor of Veterinary Medicine at Cornell University. Host:  Lindsay Smith Rogers, MA, is the producer of the Public Health On Call podcast, an editor for Expert Insights, and the director of content strategy for the Johns Hopkins Bloomberg School of Public Health. Show links and related content:   A Roadmap of Primary Pandemic Prevention Through Spillover Investigation—Emerging Infectious Diseases   Healthy Ecosystems, Healthy Humans—Hopkins Bloomberg Public Health Magazine   What's the Difference? The Meaning of One Health—Global Health Now   Can Spillover—How Viruses Move From Animals to Humans—Be Prevented?—Public Health On Call (November 2021)   Transcript Information: Looking for episode transcripts? Open our podcast on the Apple Podcasts app (desktop or mobile) or the Spotify mobile app to access an auto-generated transcript of any episode. Closed captioning is also available for every episode on our YouTube channel. Contact us: Have a question about something you heard? Looking for a transcript? Want to suggest a topic or guest? Contact us via email or visit our website. Follow us:   @PublicHealthPod on Bluesky   @JohnsHopkinsSPH on Instagram   @JohnsHopkinsSPH on Facebook   @PublicHealthOnCall on YouTube   Here's our RSS feed   Note: These podcasts are a conversation between the participants, and do not represent the position of Johns Hopkins University. 


