Three people have died and at least 67 people have been diagnosed with Legionnaires’ disease in a cluster that broke out in New York City last week.

A Legionnaires’ disease outbreak in New York City has left 70 people sick and three dead. Officials suspect cooling towers to be the source of the Legionella bacteria.

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