New York City health officials have confirmed an outbreak of Legionnaires' disease on the Upper East Side of Manhattan, with the number of cases rising to 14. The outbreak, first identified last week, has led to concerns about potential exposure sites, including areas adjacent to Central Park.

The city's Department of Health and Mental Hygiene is investigating the source of the outbreak. Legionnaires' disease is a severe form of pneumonia caused by Legionella bacteria, which thrive in warm water environments, including cooling towers, hot tubs, and decorative fountains. While the specific source has not yet been identified, officials are urging caution.

Authorities have not provided specific details about the affected individuals beyond confirming the 14 cases. However, they have issued advisories to residents and visitors in the affected neighborhoods, particularly those who frequent Central Park. The department is working to identify and remediate any potential sources of contamination.

Public health officials are emphasizing that Legionnaires' disease is not spread from person to person. Instead, people become infected when they inhale mist or vapor containing the bacteria. Symptoms include cough, shortness of breath, fever, muscle aches, and headaches, similar to pneumonia.

This outbreak is the latest public health challenge for New York City, which has previously dealt with similar Legionnaires' disease clusters. In 2015, a significant outbreak on the Upper West Side was linked to cooling towers, leading to enhanced regulations for buildings with such systems.

Health officials are advising anyone experiencing symptoms consistent with Legionnaires' disease, especially if they have recently been in the Upper East Side or Central Park area, to seek immediate medical attention. They are also reminding the public that prompt diagnosis and treatment with antibiotics are crucial for recovery.

The investigation is ongoing, and the Department of Health and Mental Hygiene has stated it will provide updates as more information becomes available. The focus remains on pinpointing the source to prevent further cases and ensure public safety in one of the city's most frequented public spaces.

Residents and visitors are encouraged to stay informed through official city health advisories. While the risk is believed to be localized, the expansion of the case count underscores the urgency of the investigation and the need for public awareness.