Program records 139,000 health conditions in 9/11 responders and survivors 25 years later

The short version

• As of June 30, 2026, the World Trade Center Health Program documented over 139,000 health conditions across more than 150,000 survivors and responders.[Scientific American]
• Cancer accounted for roughly 71 percent of the program's newly recorded conditions in the preceding 12 months.[Scientific American]
• More than 9,400 people have died from 9/11-related illnesses, following an estimated exposure of 400,000 people to hazardous contaminants.[ABC News · Scientific American]
• The New York City mayor's office agreed to release records indicating the city may have downplayed post-attack Manhattan air quality issues.[Scientific American]

Key facts

• The World Trade Center Health Program documented over 139,000 conditions in more than 150,000 survivors and first responders as of June 30, 2026.[Scientific American]
• Cancer accounted for approximately 71 percent of health conditions recorded by the program in the year leading up to June 30, 2026.[Scientific American]
• Over 9,400 deaths have been tied to 9/11-related illnesses according to program records.[ABC News]
• The CDC estimates that 400,000 individuals were exposed to hazardous conditions and toxic contaminants after the attacks.[Scientific American]
• The New York City mayor's office agreed to disclose documents suggesting municipal officials may have minimized post-attack air quality hazards.[Scientific American]

Sources

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.

• 25 years after 9/11, survivors are still getting sick—here are the numbersScientific American metered
• First responders still navigating health effects 25 years post-9/11ABC News - Top Stories