Announcement of the latest death comes just hours after city officials identified 12 cooling towers in 10 Harlem buildings that tested positive for Legionnaires' disease.
The ailment has sickened 12 people since July 11, the county said. The reported fatality was the first one identified in the county "for several years."
Disneyland has shut down two cooling towers after people who visited the Southern California theme park came down with Legionnaires' disease.
A new report just released says dirty cooling towers may be to blame for Legionnaires' Disease outbreak at San Quentin State Prison.
Visiting time for family members of prisoners at San Quentin in Marin County has been halted this weekend as health and prison officials investigate a case of Legionnaires disease.
Water has been shut off at San Quentin State Prison following a possible outbreak of Legionnaires' disease. One prisoner has a confirmed case and there are at least 30 suspected cases of the disease at the prison.