The death toll in New York City’s Legionnaires’ disease cluster on the Upper East Side has risen again, according to health officials. The outbreak has been centered in the Carnegie Hill and Yorkville neighborhoods, and officials said all of the victims had been in that part of Manhattan.

Despite the latest reported death, authorities said there are signs the outbreak may be easing. A recent decline in newly identified Legionnaires’ cases suggests the source of the cluster was likely eliminated, an important development in efforts to stop further exposure.

The update presents a mixed picture for the Upper East Side. The cluster has had deadly consequences, but the slowdown in new cases points to improving conditions as investigators continue to monitor the area.

For now, public health attention remains focused on Carnegie Hill and Yorkville, where the outbreak has been concentrated. Officials say the trend in case counts offers reason for cautious optimism even as the impact of the Legionnaires’ cluster continues to be felt.