Gaurab Basu, Assistant Professor in the Department of Environmental Health at Harvard Chan School, explains how climate change is affecting tick behavior. Watch the full Harvard Chan Studio event, ‘Ticks on the rise: Strategies for preventing disease’: https://www.youtube.com/live/Mck9J_m_1Xk

Although funding has resumed, gaps in data, staffing losses, and interruptions in state participation threaten the Pregnancy Risk Assessment Monitoring System’s effectiveness.

Opinion: Data disruptions put powerful maternal and child health tool at risk | Harvard T.H. Chan School of Public Health

The consequences of disruptions to the Pregnancy Risk Assessment Monitoring System are falling heaviest on already-vulnerable populations.

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As of this week, cases of cyclosporiasis are still rising throughout the country. Federal health officials continue to investigate, believing there could be multiple outbreaks from different sources, beyond the outbreak linked to iceberg lettuce grown by Taylor Farms.

Cyclosporiasis outbreak: What to know | Harvard T.H. Chan School of Public Health

Cyclosporiasis, a parasitic gastrointestinal illness, is spreading across the U.S., sickening thousands and hospitalizing hundreds.

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The Leaders in Health program at Harvard Chan provides training and leadership development for people in nonprofit, government, and other roles who want to apply a public health lens to their work with communities. Applications for the 2026 program, which runs September 17–November 5, open August 1.

Leaders in Health program equips community leaders to drive change | Harvard T.H. Chan School of Public Health

Leaders in Health provides public health training and leadership development for people in nonprofit, government, and other roles.

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Pandemics should be treated not only as public health emergencies but as national security threats given the devastation they cause, according to a STAT opinion piece co-authored by David Blumenthal, professor of the practice of public health and health policy at Harvard Chan School.

Opinion: Treat pandemics like national security threats | Harvard T.H. Chan School of Public Health

There is no greater threat to the nation’s welfare than the next looming pandemic, the authors wrote.

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“For people with COPD and asthma-COPD overlap whose lung function is already impaired, any further obstruction or inflammation caused by pollen exposure could have clinical consequences.” Learn more from the new study led by Harvard Chan School:

Pollen may exacerbate COPD symptoms | Harvard T.H. Chan School of Public Health

Pollen exposure can further reduce lung function in people with chronic obstructive pulmonary disease, according to a new Harvard Chan School study.

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In a new study, researchers led by Harvard Chan School’s Kjetil Bjornevik uncovered a key mechanism driving the link between Epstein-Barr virus and multiple sclerosis—a finding that could inform the development of new therapies for the chronic autoimmune disease.

Uncovering how Epstein-Barr virus drives MS | Harvard T.H. Chan School of Public Health

Researchers uncovered a key mechanism driving the link between Epstein-Barr virus and multiple sclerosis--a finding that could inform the development of new vaccines and therapies.

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Most adults can safely consume up to 400 mg of caffeine each day—the amount found in up to five eight-ounce cups of coffee—and doing so may have cardiovascular benefits, according to a recent American Heart Association statement published in Circulation.

Up to five cups of coffee a day may benefit heart health | Harvard T.H. Chan School of Public Health

Most adults can safely consume up to 400 mg of caffeine each day—and doing so may have cardiovascular benefits.

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Smoke from wildfires burning in Canada continues to travel down to the U.S., degrading air quality. Environmental health researchers from Harvard Chan School laid out the health stakes of this smoke-filled air—and shared methods to help stay safe and healthy.

Wildfire smoke: How to protect yourself, according to experts | Harvard T.H. Chan School of Public Health

Environmental health experts from Harvard Chan School lay out the health stakes of wildfire smoke, and share methods to help stay safe and healthy.

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At a recent Harvard Chan Studio event, a panel of environmental health researchers discussed a new global reality: how soaring temperatures are endangering communities, straining health systems, and demanding effective policy solutions.

Amid extreme heat, ‘know your risk and check on your neighbors,’ say experts | Harvard T.H. Chan School of Public Health

According to Harvard Chan School experts, soaring temperatures are endangering communities, straining health systems, and demanding effective policy solutions.

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Cyclosporiasis, a parasitic gastrointestinal illness, is spreading across the U.S., sickening thousands and hospitalizing hundreds. Bill Hanage, professor of epidemiology at Harvard Chan School, shares what’s important to know about the disease and this atypically large outbreak.

Cyclosporiasis outbreak: What to know | Harvard T.H. Chan School of Public Health

Cyclosporiasis, a parasitic gastrointestinal illness, is spreading across the U.S., sickening thousands and hospitalizing hundreds.

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Harvard Chan School's Roget Shapiro recently discussed what the end of PEPFAR funding in South Africa could mean for the country’s HIV response. “If this moves from the category of temporary disruption to long-term structural loss, there will be aspects of the program that will be very hard hit.“

What the end of PEPFAR funding could mean for South Africa's HIV response | Harvard T.H. Chan School of Public Health

HIV/AIDS expert Roger Shapiro discussed the public health impact of a loss of PEPFAR funding in South Africa.

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For over 10 years, Harvard Chan’s hybrid MPH in Epidemiology program has provided students with a flexible way to develop public health skills. “It’s the perfect balance of on campus and off,” said Martin Ekiti, who lives in Oklahoma with his wife—a physician completing her residency—and kids.

Hybrid Master's in Epidemiology program builds skills, community | Harvard T.H. Chan School of Public Health

For more than a decade, Harvard Chan School's hybrid MPH in Epidemiology program has been providing students with a flexible way to gain public health skills while continuing to work.

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Lifestyle changes, such as eating a balanced diet and managing stress, can help reduce women’s risk of endometrial cancer, according to Harvard Chan School’s Immaculata De Vivo.

Endometrial cancer is on the rise. Lifestyle changes can reduce the risk. | Harvard T.H. Chan School of Public Health

Lifestyle changes, such as eating a balanced diet and managing stress, can help reduce women’s risk of endometrial cancer, according to Harvard Chan School's Immaculata De Vivo.

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Harvard Chan School’s Christina Marie Dieli-Conwright and Erica Kenney discussed ways kids can get more exercise and eat healthier in a new series from the Discovery Museum.

Sharing expertise on ways kids can be healthier | Harvard T.H. Chan School of Public Health

Two experts from Harvard Chan School—Christina Marie Dieli-Conwright and Erica Kenney—discussed ways kids can get more exercise and eat healthier in a new video and podcast series.

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Tinnitus—a condition characterized by phantom ringing in the ears—is common among former NFL players and is often accompanied by worse mental health, according to a new study led by researchers at Harvard Chan School.

Tinnitus common among football players, linked to history of head injury | Harvard T.H. Chan School of Public Health

Tinnitus—a condition characterized by phantom ringing in the ears—is common among former NFL players and is often accompanied by worse mental health, according to a new Harvard Chan School study.

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What good is a vaccine people don’t trust? Kizzmekia Corbett-Helaire co-developed the first COVID-19 vaccine to enter clinical trials, but she says making the vaccine was never the hardest part. Watch her recent TED Talk on vaccine inquisitiveness and pandemic preparedness: https://bit.ly/3SQrBrB

This year, CAUSALab awarded 47 tuition waivers for PhD students to attend the Summer Courses on Causal Inference @hsph.harvard.edu. Thank you to Johnson & Johnson for their generous support of the 2026 Course Tuition Waiver Program!

A proposed overhaul in how federal grants are awarded is aimed at shutting down scientific research on disfavored topics such as health disparities, climate change, gender identity, and vaccines, according to Harvard Chan School’s Nancy Krieger.

Opinion: Proposed federal grant rules are attempt to ‘muzzle' science | Harvard T.H. Chan School of Public Health

A proposed overhaul in how federal grants are awarded is aimed at shutting down scientific research on disfavored topics such as health disparities, climate change, gender identity, and vaccines, according to Harvard Chan School's Nancy Krieger.

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Shruti Gogia, MPH ’24, a veterinarian, shared how Harvard Chan School shaped her career. “Beyond the technical knowledge, the experience [at Harvard] reinforced the importance of learning directly from experts with decades of field experience and listening to the communities we seek to serve.“

Building a career at the intersection of animal and human health | Harvard T.H. Chan School of Public Health

Shruti Gogia, MPH ’24, a veterinarian and public health specialist from India, shared how coming to Harvard Chan School shaped her career.

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American sunscreen formulas hadn't been updated in nearly 30 years—until early June, when the FDA approved bemotrizinol (BEMT), a sunscreen ingredient widely used in Europe and Asia. Harvard Chan School's Alan Geller discusses the ingredient and its public health potential:

Sunscreen in the U.S. gets an update: What to know | Harvard T.H. Chan School of Public Health

American sunscreen formulas hadn’t been updated in nearly 30 years—until early June, when the FDA approved bemotrizinol, a sunscreen ingredient widely used in Europe and Asia. Harvard Chan School's Al...

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With many places around the world facing extreme temperatures, researchers warn that people with chronic diseases may experience flare-ups or worsening symptoms during very hot weather. Those at risk include individuals with cardiovascular, respiratory, metabolic, and neurological conditions.

Heat can worsen certain health conditions | Harvard T.H. Chan School of Public Health

People with chronic diseases may face flare-ups or worsening symptoms during very hot weather, according to experts.

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Watch LIVE: As Ebola cases rise in the DRC and Uganda, responders face strained health systems, conflict, remote terrain, and cross-border movement. Leaders from @who.int and @ifrc.org discuss the current response and what it reveals about humanitarian aid and global health security.

The fight against Ebola

YouTube video by Harvard T.H. Chan School of Public Health

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As Ebola cases in Central Africa surpass 1000, Phuong Pham, associate professor in Harvard Chan School’s Department of Global Health and Population, weighs in on how the shuttering of USAID and other foreign aid cuts have contributed to the current spread of Ebola.

Ebola's spread fueled by cuts in humanitarian aid | Harvard T.H. Chan School of Public Health

Harvard Chan School's Phuong Pham shares how the shuttering of USAID and other foreign aid cuts have contributed to the current spread of Ebola—and what it might mean for global health security in the...

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According to a new Harvard Chan School study, taking GLP-1s during the first trimester of pregnancy does not appear to increase the risk of adverse outcomes. “Our findings are not informative about safety for sustained use in pregnancy,“ says @causalab.org's Jeremy Brown.

GLP-1 use during early pregnancy may not increase risk of major adverse outcomes | Harvard T.H. Chan School of Public Health

Taking GLP-1s during the first trimester of pregnancy does not appear to increase the risk of major adverse outcomes such as non-live birth, according to a new Harvard Chan School study.

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Blood lead levels in young children in the U.S. are declining overall but remain higher among children belonging to racial minorities or low-income families, according to a new Harvard Chan School study.

Lead exposure disparities persist among young children in U.S. | Harvard T.H. Chan School of Public Health

Blood lead levels in young children in the U.S. are declining overall but remain higher among children belonging to racial minorities or low-income families, according to a new Harvard Chan School stu...

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For many people, consistent exercise feels daunting. Today's discussion reframes physical activity as something accessible and sustainable by challenging common myths about exercise and the amounts needed for health and well-being. Watch live at 1 PM ET on our YouTube channel: https://bit.ly/4eiimJ6

“These findings highlight the potential of creator-focused interventions to promote positive mental health behavioral outcomes on video-based social media platforms,” wrote the co-authors of a study that examined the results of mental health communication training for social media content creators.

Training TikTok creators in mental health communication improves audiences’ mental health knowledge, competencies | Harvard T.H. Chan School of Public Health

Providing training in mental health communication to social media content creators can help improve their audiences’ abilities to gather and understand mental health knowledge as well as boost their e...

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AI has already changed how health care organizations collect and analyze data. Now, it’s changing how they build new solutions for challenges such as automating administrative work and supporting clinical decision-making. Learn more from our recent Harvard Chan Studio event:

Experts discuss AI’s growing role in transforming health care | Harvard T.H. Chan School of Public Health

Panelists explored how health care organizations are using AI tools.

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“What drew me [to the project] was the argument that civic participation is a meaningful pathway to health. If you can’t engage in the governance of your own community, you have less power to shape the policies that determine what resources flow to you and on what terms,” said Jake Wheeler, DrPH ’28

Students work on social impact projects in Native American communities | Harvard T.H. Chan School of Public Health

Jake Wheeler, DrPH ’28 worked with a Native-led organization to develop a civic engagement curriculum for the Klamath Tribes.

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