From 2003 to 2004, over 71,000 people enrolled in the WTC Health Registry by completing an initial survey (Wave 1). The survey involved a 30-minute telephone or in-person interview. Among these enrollees were 2,869 children 18 years of age or younger at the time of the interview. Data for children were collected by proxy interviews with a parent or guardian. Although more than 85% live in the New York City greater metropolitan area (New York, New Jersey and Connecticut) there are enrollees from every state and 15 other countries.
Download a map of all enrollees by state (PDF).
Download a map of rescue and recovery workers and volunteers by state (PDF).
More than half of all enrollees reported being caught in the dust and debris cloud from the WTC collapse.
Among all enrollees on 9/11:
Among enrollees, 28% met the criteria for more than one of the four eligibility categories above, with the greatest overlap found among rescue/recovery workers and residents who were also present in Lower Manhattan on 9/11.