Public Health On Call

About this episode: The World Health Organization is reporting thousands of cases of malnutrition and 74 civilian deaths resulting from mass starvation in Gaza in 2025. In this episode: Dr. Paul Spiegel discusses the origins of the crisis and recent developments and shares what this dire situation means for the future of the international humanitarian system. Guest: Dr. Paul Spiegel is a physician, epidemiologist and the director of the Center for Humanitarian Health at the Johns Hopkins Bloomberg School of Public Health. Dr Spiegel has worked in humanitarian emergencies for the last 30 years. Host: Dr. Josh Sharfstein is vice dean for public health practice and community engagement at the Johns Hopkins Bloomberg School of Public Health, a faculty member in health policy, a pediatrician, and former secretary of Maryland’s Health Department. Show links and related content: No Proof Hamas Routinely Stole U.N. Aid, Israeli Military Officials Say—New York Times Malnutrition rates reach alarming levels in Gaza, WHO warns—World Health Organization Humanitarian Health in Gaza and Beyond—Public Health On Call (June 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.

About this episode: Since the 1980s, petrochemical production along an 85-mile stretch of the Mississippi River has designated the corridor as “Cancer Alley,” but recent research shows that the risks from air pollution in the region have been seriously underestimated. In this episode: Pete DeCarlo and Keeve Nachman of the Johns Hopkins University discuss their concerning findings about compounding chemical exposure on human health and explain what these conclusions mean for how the United States should regulate carcinogens. Guest: Pete DeCarlo, PhD, is an associate professor in Environmental Health and Engineering at the Johns Hopkins Whiting School of Engineering. Keeve Nachman, PhD, MHS, is the Robert S. Lawrence Professor in Environmental Health and Engineering at the Johns Hopkins Bloomberg School of Public 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: Air testing reveals cancer-causing gas levels far exceeding some government estimates—ABC News 4 Ethylene Oxide in Southeastern Louisiana’s Petrochemical Corridor: High Spatial Resolution Mobile Monitoring during HAP-MAP—Environmental Science and Technology Surprisingly High Levels of Toxic Gas Found in Lousiana—The Hub 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.

About this episode: The United States stands at a pivotal juncture in eliminating HIV. Despite recent advancements, including the development of an effective new form of pre-exposure prophylaxis (PrEP), an uncertain future marked by cuts to Medicaid and research hurdles threatens to undo the country’s progress. In this episode: Jeremiah Johnson, Executive Director of PrEP4All, sheds light on the urgent need for equitable access to PrEP and what’s at stake if we fail to scale up initiatives to test, prevent, and treat HIV. Guest: Jeremiah Johnson is the Executive Director of PrEP4All—an organization that seeks to prevent the spread of HIV by identifying data-driven policy solutions to increase access to PrEP. Host: Dr. Josh Sharfstein is vice dean for public health practice and community engagement at the Johns Hopkins Bloomberg School of Public Health, a faculty member in health policy, a pediatrician, and former secretary of Maryland’s Health Department. Show links and related content: Trump’s Policies Could Undermine the Fight to End America’s HIV Epidemic—Tradeoffs FDA approves Gilead’s twice-yearly HIV prevention injection, offering a powerful and convenient new option—CNBC Financing and Delivering Pre-Exposure Prophylaxis (PrEP) to End the HIV Epidemic—Journal of Law, Medicine & Ethics A National PrEP Program to End the Nation’s HIV Epidemic—Public Health On Call (April 2022) 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.

About this episode: In the 1980s, Colombian neurologist Francisco Lopera discovered a rare genetic mutation afflicting residents of a village outside Medellín that could hold the key to understanding and treating Alzheimer’s disease. In this episode: Author Jennie Erin Smith talks about her new book Valley of Forgetting: Alzheimer's Families and the Search for a Cure and how families in the Paisa region of Colombia have forever changed the study of neurodegenerative diseases. Guest: Jennie Erin Smith is an author and a regular contributor for The New York Times, whose work has also appeared in The Wall Street Journal, The Times Literary Supplement, The New Yorker, and more. 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: Valley of Forgetting: Alzheimer’s Families and the Search for a Cure—Penguin Random House A Different Way to Think About Medicine’s Most Stubborn Enigma—The Atlantic The ‘Country Doctor’ Who Upended Our Understanding of Dementia—New York Times 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.

About this episode:  In early July, the CDC deactivated the United States’ H5N1 emergency response, citing lowered rates of infection among animals and humans. But fewer cases might not indicate an end to the years-long emergency. In this episode: Dr. Erin Sorrell of the Johns Hopkins Center for Health Security details the timeline of the virus, its impacts on American farmers, and how to prepare for the return of migratory birds later this year. Guest: Dr. Erin Sorrell, PhD, MSc, is an associate professor at the Johns Hopkins School of Public Health Department of Environmental Health and Engineering and senior scholar at the Johns Hopkins Center for Health Security. 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: As bird flu evolves, keeping it out of farm flocks is getting harder—ScienceNews RFK's proposal to let bird flu spread through poultry could set us up for a pandemic, experts warn—Live Science Bird Flu Is Escalating—Public Health On Call (January 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.

About this episode: The recent dismissal of all members of the CDC's Advisory Committee on Immunization Practices (ACIP) has stirred questions about vaccine safety and immunization protocols. In this episode: Dr. Grace Lee—a former ACIP chair—shares insights on the committee's crucial role in recommending vaccines uses, the importance of transparent decision-making, and dangers of abandoning strong processes. Guest: Dr. Grace Lee, MPH, is the Chief Quality Officer and the Christopher G. Dawes Endowed Director of Quality at Stanford Medicine Children’s Health and Lucile Packard Children’s Hospital Stanford, and Associate Dean for Maternal and Child Health (Quality and Safety) and Professor of Pediatrics at Stanford University School of Medicine. She previously served as the Chair of ACIP. Host: Dr. Josh Sharfstein is vice dean for public health practice and community engagement at the Johns Hopkins Bloomberg School of Public Health, a faculty member in health policy, a pediatrician, and former secretary of Maryland’s Health Department. Show links and related content: Former chairs of the Advisory Committee on Immunization Practices on the panel’s role—STAT Who Decides Which Vaccines Americans Should Get and When?—Johns Hopkins Bloomberg School of Public Health 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.

About this episode: The deadly Fourth of July floods in Kerr County, TX are raising urgent concerns about flash flooding risks and the future of storm response. In this episode: Hurricane specialist and storm surge expert Michael Lowry discusses what causes increasingly intense storms, details the significant strides made in forecasting, and outlines what’s at stake with potential cuts to NOAA. Guest: Michael Lowry is a hurricane specialist and storm surge expert for WPLG-TV in Miami, FL. He previously served as a senior scientist at the National Hurricane Center and as disaster planning chief at FEMA. 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: Trying to Make Sense of the Unspeakable Texas Tragedy—Eye on the Tropics The Trump Administration Has Blinded Hurricane Forecasters—Intelligencer Critical Hurricane Monitoring Data Is Going Offline—New York Times 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.

About this episode:  Artificial intelligence is changing everything about how we work, live, and study—and, now, AI therapy chatbots are poised to transform mental health care. In this episode: Stanford researcher Nick Haber details recent data that suggests that therapeutic AI has a long way to go in addressing biases and recognizing safety-critical situations in order to provide adequate care. Guest: Nick Haber, PhD, is an assistant professor at the Stanford Graduate School of Education, and by courtesy, Computer Science, where he researches AI implementation for learning and therapeutic tools. 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, the largest center at the Johns Hopkins Bloomberg School of Public Health. Show links and related content: Expressing stigma and inappropriate responses prevents LLMs from safely replacing mental health providers—FAccT '25: The 2025 ACM Conference on Fairness, Accountability, and Transparency Kids Are in Crisis. Could Chatbot Therapy Help?—New York Times Exploring the Dangers of AI in Mental Health Care—Stanford Institute for Human-Centered AI 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.

About this episode: For mothers questioning whether or not to vaccinate their children, the decision can be complicated by an overwhelming and, at times, conflicting information environment. In this episode: Health communication researcher Melissa Carrion explores how an onslaught of messaging is informing how mothers decide to vaccinate their kids and how public health experts can better communicate on these key decisions. Guest: Melissa Carrion, PhD, is an assistant professor of Writing and Rhetoric at the University of Nevada, Las Vegas, where she researches rhetoric and health communication. 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: How one mom is navigating vaccines’ uncertain future—ScienceNews New Research: Childhood Vaccination Rates Drop Across 1,600 U.S. Counties—The 74 "I Don't Understand How These Two Things Go Together": Toward a Theory of Risk Ecologies—Health Communication “You need to do your research”: Vaccines, contestable science, and maternal epistemology—Public Understanding of Science 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.

About this episode: Asthma can cause sometimes debilitating symptoms for children who have it, and some—particularly Black and Hispanic children—can experience higher rates of diagnoses, hospitalizations and emergency department visits. In this episode: pediatrician and immunology researcher Dr. Elizabeth Matsui talks about the known causes behind childhood asthma and how it impacts youths, and how factors like poor housing conditions and barriers to care and medication worsen conditions and undermine long-term lung development. Guest: Dr. Elizabeth Matsui is a pediatric allergist-immunologist and epidemiologist and a leading researcher on the connection between asthma and environmental conditions. 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 at the Johns Hopkins Bloomberg School of Public Health. Show links and related content: The Role of Neighborhood Air Pollution in Disparate Racial and Ethnic Asthma Acute Care Use—American Journal of Respiratory and Critical Care Medicine Association of a Housing Mobility Program With Childhood Asthma Symptoms and Exacerbations—JAMA Do upper respiratory viruses contribute to racial and ethnic disparities in emergency department visits for asthma?—The Journal of Allergy and Clinical Immunology Tackling Housing Injustice—and Improving Childhood Asthma—Public Health On Call (June 2023) 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