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.

While the Legionnaires’ disease outbreak in New York City’s Central Harlem has slowed, it hasn’t stopped. Here's what to know about symptoms, how the bacteria spread, and why it's OK to drink the water in affected areas.

About one in 10 people who get sick from Legionnaires' disease die from the disease due to complications from illness, CDC said.