New York City health officials are warning locals and officials of a growing Legionnaires’ disease outbreak after confirming 14 cases Sunday.

Officials said the cases are tied to ZIP codes on Manhattan’s Upper East Side, warning people who visited the east side of Central Park to watch for flu-like symptoms. The ZIP codes include 10028, 10128, and 10075, according to reports. (RELATED: Congo Crowd Sets Ebola Hospital Tents Ablaze At Epicenter Of Outbreak)

Legionnaires’ disease is a severe type of pneumonia that can be deadly but is treatable with antibiotics. The disease can be contracted by breathing in mist containing the bacteria, but is not typically spread person to person, according to the Centers for Disease Control and Prevention (CDC). Symptoms include cough, fever, shortness of breath, muscle aches, and headaches.

“I want to acknowledge the NYC Health Department’s staff of epidemiologists, water ecologists, community health workers, and many more who spent the last few days working to keep New Yorkers on the Upper East Side informed and safe,” NYC Health Commissioner Alister Martin said in a statement.

Our @nycHealthy canvassers have knocked on hundreds of doors so far this afternoon, reaching residents across the UES cluster zone.

If you live in Carnegie Hill or Yorkville (zips 10028/10128) watch for fever, cough, shortness of breath.

Please don’t wait.

Call your doctor. pic.twitter.com/hVaDQ58bec

— Dr. Alister Martin (@NYCHealthCommr) July 4, 2026

“We identified the cluster early when there were just two confirmed cases, and we’ve acted swiftly and decisively, setting holiday plans aside to step up for our fellow New Yorkers,” Martin added. “There is more work to do in the days ahead as we learn more about the source of exposure and confirmed cases.”

NYC Mayor Zohran Mamdani addressed the outbreak and reassured residents that the infrastructure in the ZIP codes remained safe to use.

“This is not an issue with any buildings’ plumbing or indoor AC units, and residents in the area are safe to drink tap water, bathe, shower, cook, and use their air conditioner at home,” Mamdani said. “Please contact a health care provider immediately if you live, work, or visited the area since late June and are experiencing flu-like symptoms, such as cough, fever, or difficulty breathing.”