The Zadroga Act, passed by Congress in December 2010, is designed to provide medical services and compensation for responders who were exposed to toxins while working at ground zero. President Barack Obama signed the $4.2 billion legislation in January 2011. The law is named after a New York police officer who died of a respiratory disease attributed to working amid the toxic chemicals at the attack site.
First responders, volunteers, survivors of the attacks and residents near the 9/11 site who meet specific qualifications are eligible for coverage, according to the CDC.
The program has also been recently expanded to include responders from the Pentagon attack and Shanksville, Pennsylvania, where United Airlines Flight 93 crashed. People are still enrolling from those locations so the National Institute for Occupational Safety and Health does not have an accurate count of how many people were affected, a representative told CNN.
To determine eligibility for the WTC Health Program, visit www.cdc.gov/wtc.