Children exposed to the 9/11 attacks to be the subject of a major medical study

Twenty-five years after the September 11, 2001 attacks, US authorities are preparing a comprehensive study on the long-term effects of children's exposure to the dust and toxic substances resulting from the collapse of the World Trade Center. The research is set to track individuals-including those who were in utero at the time of the attacks-and will receive up to $50 million in funding, Reuters reports. Approximately 25,000 children lived or attended school in Lower Manhattan, near the World Trade Center, on September 11, 2001. This group included infants and unborn children who were subsequently exposed to the dust and particles generated by the building collapses. According to Reuters, the new research program is being prepared by US authorities under the coordination of the Centers for Disease Control and Prevention (CDC) and is scheduled to begin no later than July 2027. The US Congress approved funding for this research back in 2022.

• A population exposed during childhood

Researchers will track individuals who were under the age of 21-or in utero-at the time of the attacks and who lived in Lower Manhattan or Brooklyn during that period. The study will also include a comparison group consisting of individuals who were not exposed. The goal is to identify potential medical effects that may emerge or persist decades after childhood exposure to contaminants produced by the attacks. Reuters notes that the initial post-9/11 medical monitoring programs focused primarily on adults-specifically firefighters, police officers, and others involved in rescue and response operations. Children were less represented in these studies.

Existing data already indicate that the effects on children were investigated in the years following the attacks. According to New York health authorities, more than 3,000 children who were under the age of 18 on September 11, 2001, were enrolled in the World Trade Center Health Registry. They were included in assessments regarding exposure, physical health, and mental health. A study published in 2008 showed that approximately half of the children in the study reported at least one new or worsening respiratory symptom following the attacks, and exposure to the dust cloud was linked to a higher risk of an asthma diagnosis. Another study, which tracked medical hospitalizations among those exposed as children, identified both physical and mental health issues in the years following the attacks. Researchers emphasized the importance of long-term monitoring for this population.

• Up to $50 million for the new research

The new study will have up to $50 million in funding, and the CDC plans to establish a dedicated research coordination center for young people affected by the World Trade Center attacks. Researchers aim to determine more clearly whether childhood exposure to contaminants from the disaster can have health consequences decades later. However, the importance of this research extends beyond the New York attacks. According to experts cited by Reuters, the findings could help shed light on how children's exposure to toxic substances following large-scale disasters affects their long-term health. Twenty-five years after 9/11, some of the children exposed at the time have already reached middle age. This long-term perspective is precisely what makes the new research significant. For U.S. authorities, the study represents an effort to fill gaps in existing data regarding a generation that lived through one of the worst terrorist attacks in U.S. history during childhood or even before birth.