By CBSNewYork Team

NEW YORK (CBSNewYork) — There is an update on the cluster of cases of Legionnaires’ disease found in Harlem.

The health department has now closed the investigation after four weeks with no new cases.

City health officials had reported 18 people infected with the disease. All were hospitalized and nearly all have been discharged.

Legionnaires’ disease is a type of pneumonia caused by the bacteria legionella, which grows in warm water.

CBSNewYork Team