Active Public Health Outbreaks in Nevada
As of late November 2025, Nevada is managing several active public health investigations. The most urgent recent development is a confirmed Measles case in Clark County, marking the first local case in years. Simultaneously, health officials are monitoring ongoing Legionnaires' disease clusters at two Las Vegas hotels and a persistent Shigellosis outbreak in Washoe County. The 2025-2026 respiratory virus season is currently in its early stages with increasing activity.
| Disease | Location | Status (Nov 2025) | Key Details |
|---|---|---|---|
| Measles | Clark County | Active Alert | First confirmed case reported Nov 10, 2025. Part of a national surge (>1,700 US cases in 2025). |
| Legionnaires' Disease | Las Vegas (South Point & Grandview) | Investigation | Multiple cases linked to guests from Aug 2024–April 2025. Remediation ongoing. |
| Shigellosis | Washoe County | Ongoing | Outbreak declared Dec 2024; remains active in homeless populations. 16 open outbreaks noted in Nov 2025 report. |
| Respiratory Viruses | Statewide | Seasonal Rise | Flu and RSV increasing. 49 flu hospitalizations in Clark County for current season. |
Detailed Outbreak Analysis
Measles Resurgence
On November 10, 2025, the Southern Nevada Health District (SNHD) confirmed a case of measles in Clark County. This is a critical public health event as measles is highly contagious. The case is part of a broader national trend where the U.S. has seen over 1,700 confirmed cases in 2025, a significant increase from previous years.
Advisory: Unvaccinated residents are at high risk. Health officials urge immediate vaccination (MMR) for all eligible individuals.
Legionnaires' Disease Clusters
Two separate but geographically close properties in Las Vegas are under investigation for Legionella bacteria in their water systems.
- South Point Hotel: 2 confirmed cases (Aug 2024, Feb 2025).
- The Grandview at Las Vegas: 3 confirmed cases (Feb 2025, April 2025). All required hospitalization.
Guests who stayed at these locations in Spring 2025 are advised to monitor for respiratory symptoms.
2025-2026 Respiratory Season Snapshot (Clark County)
Data current as of mid-November 2025. Source: Southern Nevada Health District.