# 5 dead, 82 sick in Upper East Side Legionnaires’ disease outbreak

> **Newsylist Open Intelligence Dossier** · First detected: 2026-07-22 12:29 UTC · Category: Health · Sources: 7 · Current Velocity: 4.63

## Executive Summary
7 news sources are covering this Health story right now — Newsylist is tracking how fast it spreads.

## Intelligence Brief
"5 dead, 82 sick in Upper East Side Legionnaires’ disease outbreak" is generating significant coverage in the Health category, with 7 articles from 7 distinct sources tracked by Newsylist so far.


Outlets currently covering the story include Patch, NBC New York, Spectrum News NY1 and Politico. Newsylist measures a story's velocity from how quickly new articles appear and how many independent newsrooms join the coverage.


Synthesized from multi-source international reporting and live coverage telemetry under Newsylist open intelligence methodology.

## Verified Facts & Key Claims
### Why is "5 dead, 82 sick in Upper East Side Legionnaires’ disease outbreak" trending?
Because 7 independent news sources published 7 articles about it in a short window — a coverage burst Newsylist classifies as a trend.

### How does Newsylist measure this trend?
Newsylist scores velocity from the rate of new articles weighted by source diversity, snapshotted hourly. The full method is public on our methodology page.

### Is this trend still active?
The status badge on this page updates hourly: rising, peaking, cooling, or archived once coverage stops for 48 hours.

## Key People, Organizations & Locations
New York, NYC, Legionnaires, Upper East Side, Mamdani, Legionella, Fifth, Disease Outbreak, Sickened, Mamdani and Menin

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| Patch | 34 Cooling Towers Test Positive For Live Legionella On The UES: See List | 2026-07-22 16:24 | [Source Link](https://news.google.com/rss/articles/CBMipAFBVV95cUxQakJlZzBwVC0wcm1PNjVpVkFZNWR2NkNLbUZ3SWExUVRmTlBLV1BBMjVXYTBqOGhSSTE0UXVqMHd4TmZ5Qjk0cklibUxKOHpqWU5lUGkwaHJsdTdUcjBkUHpxbHFpSU9uM0pUS2xfTmlITEc5a1p5OEdvUGhRRVJUMmdZUW5haWJxdGROenEtNWN3cHRzQTFqbjlQZnZ1ckxuUERFcNIBywFBVV95cUxNMDhWTkNUQlhzTU9GYUtRZjNqWTBIS2NWdXdTemFGM3NoZEtWTG5JNk1oakRWTlVhWUd0NGRIam14ODVsUWJ1ZGRsMXFaSGhxdU9JYkV0WFFobWVjYUZKU0JTZENPWmZjSkR0Sk1YQXBvUWducG5GTDYzVDJpaE1OcWVBMC1KcWRmeTE1a3A2OHlPalVPckRzNm1SMS0xVzRUcG5HaVA2cC1rU2Jval9) |
| NBC New York | MAP: These Upper East Side buildings have tested positive for live Legionella | 2026-07-22 16:24 | [Source Link](https://news.google.com/rss/articles/CBMiqAFBVV95cUxQVE1uM0t5RWY5Q2xSMWtXbmJiSTg3N0xiLWozTGczLVM2d29RUkhWVXN5MzM5YTJyNTNJaE9FVHR5WmlvdTVNRlhHRmhDT1NnNU52ZXRtSWtKUFJnZkZ6OUF2NU5pZ1ZaVEhYVHczTEhIelF4ZlFLR2N1MUJ6NjJialVYMS16Tm5ZN0E4STExY3RWaFRWc3pwQzdYdlo4Y3R0WU9IcGlpMm7SAbABQVVfeXFMT1RaUEo5eURRbWNINHF6Smd1SE8zWDFvcFBWdmJFTnZBVEc2VGxfbXdIa1VmdGlxaE9PU3hXbjFLWktRZGxsTUg1T3RTU3RWNlBvdGJrYkRTa18yekMzdFNZYlltZExMVXFZOElxMmF6UWhOVU9wY29xdHFQQ2JZNG83VDZJbWNFaTBEeEhxem1XNGppN3FSekk5MVFrMG41Mm5TX0J6czVfeXd) |
| Spectrum News NY1 | Mamdani battles politics tied to Legionnaires', failed Israeli PM arrest threat | 2026-07-22 16:24 | [Source Link](https://news.google.com/rss/articles/CBMixwFBVV95cUxNZmtBSnQ1ZWNFUmlnUUVMQ1pSNFoycWkxMWJ5UmRsa1R0bFREVjNTSWN2Z2tRVmhTaTRRNk1EeHlBS2YtdnEzUFpOcXEtWGQwZzRLdENvNTBxUjlpd1BJX3QzRGUzX1JYbTZyX3VQRHR0RzBTYzJZcG9WSzZVb25weGNRekpmVEkxWlBJcEVXeHdsMzRnSVEtOHFSVzZlaTZqdndFVUxVRWN1M2F0SHl3RUh2a2tBclhvekg1M0lMZ19YUjl0VDU0?oc=5) |
| Politico | Mamdani and Menin butt heads on Legionnaires’ outbreak | 2026-07-22 16:24 | [Source Link](https://news.google.com/rss/articles/CBMiywFBVV95cUxQdjVJVmVlTzU3V3oxUHBxMkhDQm10ZEVKb2l4eEV0Z3RpVGt1RXZRQk1ESEluQXZERUVaY0hGak5VakE3RjBiTDVTLUtTV3AtZmttQ243R0xxbTZVTWJGZmFFLUtnLWh0M19LQ19VcDRCU2lWcnhTeWhKNEVNQnZjNGJKbnZaYjZDUFZuWENkMkstbnBBZmliRlQzTkl5YUswTjgwQVFMM010WV9oVkFSMHl2dUFNQndBXzhjWXNNVmtxQUs0MXpLV3BjSQ?oc=5) |
| The Hill | Fifth death reported in NYC Legionnaires’ outbreak | 2026-07-22 14:58 | [Source Link](https://news.google.com/rss/articles/CBMigwFBVV95cUxPSmZsbEwzeUVSVE5IaUxOTlhIYVljdkRIQmZlM00taFUzZ3pIXzlzSU5Xcm9WYlZtM2h5aDhUeDhBUW5IVVJMczJZeWdvMm5TMjN4TDI0cHdmZ2t4bFdNRTlTMVE1Q09hY04xaWpJR2JyTXVreE9CWWFrTFkySlpPaEZfY9IBiAFBVV95cUxNY1c2cE9QVlIzZzVYbXZwWmVFR0FLdmllQ1ZMOEJEdWtnbHc2V0RzdGpCTVpNUUxzX2E2Y3BuZzJ2cWVzdTk2VWExRmNKdjAxQ2liRlp3TnlKV1RaeGppQzB3QjdRcmh0OGVHSUZydFltenc4eTVERm9pb1ZMYUt1ekl1Rk1acVgy?oc=5) |
| People.com | 5 Dead and 82 Sickened amid Legionnaires’ Disease Outbreak in New York City’s Upper East Side | 2026-07-22 10:30 | [Source Link](https://news.google.com/rss/articles/CBMirgFBVV95cUxQOTdock9MQjdEaHN4SjVPS3JYWkJTZWo1b0RpanhLTU03TG9OREhYN3JNMWpwYWpiRUR0ZXBhSTYyT0g3NFFxTkRzWmxGU01GWGVoZjB3eFgtTVhxT3pjTWM2U1JjZjRFWkhEVFV5WmNZZExnMF9CM09BMVRkTzdGeDJkajF6WVNRUUExS2pYOHZVRHNzTDdZYjVLaGpsbHd3ZXVXUXd2Q2k4OHVFRHc?oc=5) |
| Gothamist | 5 dead, 82 sick in Upper East Side Legionnaires’ disease outbreak | 2026-07-22 10:30 | [Source Link](https://news.google.com/rss/articles/CBMilAFBVV95cUxPWWYxWWZyS0xVdkRfbEF1UVBTWTY4UGh0UDdNVkRVVHplT0dsYnVMQlN6cDVXX1ZjYzhWMlJXSEtJbEw1Qmszd2J2QWRlUXF3cnEyTTlpdndta0JNN3JDY1FWd0x4Vnl5M1ZxNlBIdm5jSkJyZHdYMDRMR3dYYk94VTJYZ255VGhqV2ZwdUNCcGxjYjN5?oc=5) |

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*Canonical Source: https://www.newsylist.com/trend/2026-07-22/5-dead-82-sick-in-upper-east-side-legionnaires-disease-outbreak*
*Synthesized by Newsylist Open Intelligence Engine under E-E-A-T journalistic standards.*