New York City ? A woman who was enveloped in toxic dust from the World Trade Center on Sept. 11 was declared the 2,750th victim of the terror attack Wednesday – after the city medical examiner did an about-face and linked the noxious plume to her illness.

The reversal means Felicia Dunn-Jones, a civil rights attorney from Staten Island who died five months after Sept. 11, will be recognized at the World Trade Center Memorial.

It also opens the door for the families of others who fell mortally ill after contact with Ground Zero dust to demand they be included on the list of victims and at the memorial.

Dunn-Jones, 42, was working a block from the trade center when the hijacked planes exploded into the towers, and she was covered in dust and ash as she fled, her family has said.

By January, the mother of two was seriously ill, overcome by coughing and fatigue. After she died suddenly on Feb. 10, 2002, the medical examiner listed sarcoidosis as the cause.

Sarcoidosis is an inflammation of tissue that starts in the lungs but can spread throughout the body, scarring vital organs and causing death.