ARPA-H · BREATHE & PRO-MICROBE Programs

An immune system for every building.

Five research teams are developing intelligent building systems that sense, assess, and protect — turning the buildings where Americans live, work, learn, and heal into active infrastructure for health.

Explore the Projects ↓

Funded by ARPA-H's Proactive Health Mission Office.

90%
of life spent indoors — yet indoor air is managed for comfort, not health
$170B+
annual U.S. spending on respiratory illness
25M
Americans living with asthma — including 4.5 million children
12.4 yrs
the U.S. healthspan-lifespan gap — the widest in the world
The Architecture

Buildings that sense, assess, and protect

A century ago, clean water transformed how long and how well Americans lived. Outdoor air quality followed. The air inside buildings — where we spend 90% of our time — is the next and missing pillar. BREATHE is building it.

Sense

Autonomous indoor air biosensors that continuously monitor the biological content of the air — allergens, mold spores, viruses, bacteria — multiplexed and scalable across building types and climate zones.

Assess

Bioaerosol risk assessment software that translates what's in the air — combined with building, community, and environmental data — into quantitative, real-time health-risk estimates for the people inside.

Protect

Intelligent building controls — filtration, ventilation, air treatment — that respond automatically to risk assessments, verified by real-time tracing technology that confirms clean air is reaching every room.

Five Teams. Five Settings.

Wherever Americans learn, heal, and grow

Each team is developing intelligent air systems for the environments that matter most — where children develop, where patients recover, where workers serve.

Daycares

BRAVE

Virginia Tech

Developing nanobody-based biosensors for real-time pathogen and allergen detection in childcare settings — where early immune exposure shapes lifelong respiratory health.

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Schools

SCALE

Poppy Health

Building the world's first continuous, direct nucleic-acid detection system for schools — sensing up to 100 airborne organisms and triggering automatic building responses to protect kids and staff.

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Hospitals

HAIQU

Mayo Clinic

Applying microfluidic CRISPR biosensors and digital twin modeling in hospital emergency departments to protect the patients who can least afford to get sick.

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Defense Health

R-TRAC

SafeTraces

Deploying qPCR-based biosensors and automated building controls across Defense Health Agency medical centers to protect immunocompromised patients and military personnel from airborne exposures.

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Homes & Research

PRO-MICROBE

Yale University

Developing the first Healthy Building Microbiome Index — a data-driven score linking a home's microbial ecology to the respiratory health of the people living there.

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Geographic Footprint

Where the work is happening

Active across the United States — in schools, daycares, hospitals, defense health facilities, and homes. Hover over a highlighted state to explore.

SCALE · Schools
BRAVE · Daycares
HAIQU · Hospitals
R-TRAC · Defense Health
PRO-MICROBE · Homes
Not yet active

Click any active state to explore that program. Map reflects confirmed performer and participant locations. Projects are ongoing.

Demo Day · June 4, 2026 · Washington, DC

Five teams. One room.

The first public demonstration of the BREATHE and PRO-MICROBE programs — showcasing autonomous biosensing platforms, intelligent risk engines, and real-time building controls that are already protecting Americans.

Recap and highlights coming soon.

Highlights & press
coming soon
In the news ARPA-H SF Examiner Mayo Clinic Virginia Tech Hoover Institution Yale Engineering All coverage →
About the Programs

ARPA-H is funding the hardest problems in American health

BREATHE

The Building Resilient Environments for Air and Total Health program is developing intelligent building platforms — biosensors, risk assessment software, and automated building controls — validated across daycares, schools, and hospitals throughout the United States.

BREATHE is a program of ARPA-H's Proactive Health Mission Office, which develops breakthrough capabilities to keep people from becoming patients — mitigating the risk of disease onset and progression throughout their lifespans.

ARPA-H BREATHE program page ↗

PRO-MICROBE

A companion ARPA-H program exploring how the microbial communities inside homes shape the respiratory health of the people who live there. Yale University's team is building the first data-driven Healthy Building Microbiome Index — linking what's living in the air and dust of a home to measurable health outcomes.

PRO-MICROBE is managed by ARPA-H's Resilient Systems Office.

ARPA-H PRO-MICROBE award page ↗