A Legionnaires' disease outbreak in New York City has infected 67 people and caused three deaths, the city Department of Health and Mental Hygiene said.

When it comes to Legionnaires' disease, this doctor explains how buildings can prevent it and what symptoms to watch for an early diagnosis.

A Legionnaires' disease cluster in the Harlem area of New York City has caused three deaths and 5over 60 people to be sickened. Here's what it is, symptoms and how it's spread.