Measles is caused by a virus that is easily spread through the air and settles on surfaces. While most people recover from measles, some become seriously ill and can die from it. This is especially true for children younger than age 5 and people with weakened immune systems. The best way to prevent measles is to get the vaccine.
Click here to learn what to do if you think your child has measles.
Wyoming measles information
News: First Wyoming Measles Case of 2026 Reported from Fremont County
News: Measles Case Confirmed in Park County
News: Five Measles Cases Identified in Fremont County, Bringing Wyoming’s Total to Fourteen
News: Four Additional Measles Cases Confirmed in Carbon County
News: Third Measles Case Confirmed in Carbon County
If you were at these locations during these times, you may have been exposed to measles:
-
Walmart Supercenter, 1733 N Federal Blvd, Riverton, WY 82501
-
April 24, 2026, 6:30 PM – 9:00 PM
-
-
Maverik, 819 E. Coulter Ave, Powell, WY 82435
-
April 25, 2026, 10:45 AM – 1:00 PM
-
2026 Wyoming Measles Cases by County (Updated 5/1/2026)
Total reported cases: 1
Fremont: 1
Resources
General Measles Information
General information about measles, including how it spreads, symptoms, treatment, and prevention
Toolkit for Public Health Professionals
Public health professionals can use this toolkit to communicate with different audiences when preparing and responding to measles cases and outbreaks.
Information for Infection Preventionists
Guidelines and recommendations for the prevention of transmission of measles in healthcare settings.
Guidance for Schools and Childcare Facilities
Guidelines and recommendations for the prevention of transmission of measles in healthcare settings.