The Service Employees International Union said it had enough signatures to trigger a vote by personal assistants who care for relatives and friends at home.
Much of the research on exposure to the World Trade Center residue has focused on emergency workers, but people there when they were young say their health is at risk, too.
New York that has endured significant outbreaks in recent years. Some experts say officials should focus more on risks in plumbing systems, even shower heads.
The deaths brought the toll in the outbreak to three. The second person who died was an 88-year-old retired businessman who lived on the Upper East Side, his lawyer said.
An ongoing cluster of the illness has sickened 23 people. That’s not unusual: Most years, 200 to 700 people in the city are diagnosed with the disease.
El exalcalde de Nueva York, que está mejorando tras un grave caso de neumonía, padece una afección respiratoria relacionada con su exposición a toxinas en la zona cero, dice su portavoz.