New York City officials have discovered a sixth death linked to a Legionnaires’ disease outbreak in Central Harlem, where more than 100 people have been diagnosed with the ailment.

A Legionnaires' disease cluster in the Harlem area of New York City has caused six deaths and sickened over 110 people. Here's what it is, symptoms and how it's spread.

There are now 108 confirmed cases of the potentially deadly form of pneumonia in Harlem since late July, NYC officials said.