A Legionnaires' disease cluster in New York has left two people dead and sickened over 50 others. Here's what Washington state residents should know.

Three people have died and at least 67 people have been diagnosed with Legionnaires’ disease in a cluster that broke out in the Harlem area of New York City last week, officials said in an update on Tuesday.

Fifty-eight people have been infected—and two have died—in a New York City outbreak of Legionnaires’ disease—a severe type of pneumonia caused by a bacterium commonly associated with air-conditioning