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What is Public Health?

Celebrate Safely this Holiday Season

Injury prevention researchers share their tips for decorating, gifting, and gathering this winter.

Holiday Safety Tips Center for Injury Research and Policy

Public Health in 2024: Historic Firsts, Unwelcome Comebacks, and Rays of Hope

As we head into 2025—a year certain to bring great change—we reflect on 2024’s public health headlines.

An Update on Avian Influenza in Dairy Cows, Poultry, and Humans

The latest on the virus’s spread, potential economic impacts, vaccine development, and how concerned the general public should be.

Ultraprocessed Foods Account for More than Half of Calories Consumed at Home

U.S. home consumption of ultraprocessed foods increasing at faster pace than consumption outside the home

Public Health at Work in Uncertain Times

While public health work has never been easy, there are ways to meet the moment.

Americans Die Younger Than U.K. Counterparts Due to Four Preventable Causes

View charts that explain a life expectancy gap between the U.S. and the U.K.

Who Controls U.S. Public Health—the Feds or the States?

The U.S. government’s approach to public health seems certain to change when the second Trump administration begins on January 20. But what powers do states have to determine and take action on their own public health priorities?

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Connect with us, our academic program offerings.

Our programs welcome those from within and outside the traditional boundaries of public health. Whether you're a future college graduate, a midcareer public health leader, or someone looking to make a career change, we have a program for you.

Master of Public Health (MPH)

The Master of Public Health (MPH) is our most flexible degree. With 12 concentrations to choose from, students can tailor their degree to their unique goals while completing classes at their own pace on campus, fully online, or a mix of the two.

We are accepting applications for the online/part-time format starting in November 2025 (in Barcelona) or January 2026.

Master of Science in Public Health (MSPH)

The Master of Science in Public Health (MSPH) is a professional degree alternative to the Master of Public Health (MPH) degree for students who want more focused skills in a specific field of public health or who lack two years of health-related work experience to begin or advance a career as a public health professional. MSPH programs generally require one academic year of coursework, followed by a field placement. The field placement duration and location vary by department/concentration.

Our Planet, Our Health

The new special issue of Hopkins Bloomberg Public Health magazine explores many of the ways humans have transformed Earth's natural systems to the detriment of human health, and highlights research aimed at repairing the harm. The Earth crisis is urgent—public health and planetary health have tools to meet the challenge.

Why Choose the Johns Hopkins Bloomberg School of Public Health?

Ranked by U.S. News & World Report since 1994

and Largest School of Public Health

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Meet our faculty.

Our faculty are world-renowned experts, and trusted advisers to our students, public health leaders, and the public.

Thomas V. Inglesby

Thomas Inglesby, MD, is internationally recognized in the fields of public health preparedness, pandemic and emerging infectious disease, and prevention of and response to biological threats.

Leslie Adams

Leslie Adams, PhD, MPH, researches the intersection of gender, race, and mental health to examine socially-determined mental health disparities in Black communities.

Akihiko Nishimura

Aki Nishimura, PhD, MS, uses Bayesian methods and statistical computing to tackle methodological challenges in healthcare analytics and large-scale biomedical applications.

Michelle Spencer

Michelle Spencer, MS, is a public health practitioner who focuses on the impacts of health equity, racial disparities, and health outcomes through community-based initiatives.

Join Us in Baltimore

Pursue a degree at the #1 school of public health in one of America's best cities. With 50+ museums, a bustling restaurant scene, gorgeous parks, and more, Baltimore is a great place to study and live.

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