Measles Exposure At Stores In Helena June 15 
Author: Lewis and Clark Public Health Office
Measles Exposure at Stores in Helena, June 15
Lewis and Clark Public Health Office
As of June 20, 2025, twenty-two (23) Montana measles cases have been confirmed in Gallatin, Flathead, Yellowstone, and Hill Counties. Although no cases have been confirmed in Lewis and Clark County residents at this time, a confirmed exposure event occurred on Sunday, June 15, 2025, when an infected resident of another county visited Helena businesses. Anyone present in the following locations during certain hours is considered likely to have been exposed to measles. The list of public exposures include:
Business	Address	                                         Exposure Date	          Exposure timeframe
TJ Maxx	2005 Cromwell Dixon Lane	         Sunday, June 15th 	   Between 2-4:30pm
Costco	2195 E. Custer Ave.	                 Sunday, June 15th 	   Between 2-4:30pm
Old Navy	3215 N. Montana Ave	                 Sunday, June 15th 	   Between 2:15-5:15pm
McKenzie River Pizza 1110 Road Runner St	 Sunday, June 15th 	   Between 3:15-6pm
Town Pump/Conoco 2910 N. Montana Ave	 Sunday, June 15th 	   Between 4-6pm
What to do if exposed: 
Lewis and Clark Public Health (LCPH) is conducting a follow-up investigation to identify the likely exposed individuals. Depending on the contact information available, LCPH will notify those individuals and provide further instructions by phone call, text message, and/or letter.
Some individuals who are at higher risk for severe measles illness may be recommended to receive preventive treatment following an exposure to measles. If you believe you or your family were exposed to measles in any of the above locations, please contact your healthcare provider immediately to discuss your options for preventive treatment. 
If you think you may have been exposed but do not receive notice from LCPH within the following several days, please complete the Measles Exposure Self-Referral Form on our website 
(https://www.lccountymt.gov/Government/Public-Health/Communicable-Disease-Control/2025-Measles-Outbreak-Information) 
The first symptoms of measles usually appear about 7-14 days after exposure: fever, cough, runny nose, red watery eyes, and/or white spots in the mouth. A red, flat rash—usually beginning near the hairline and moving downward—typically begins about 3-5 days after the first symptoms.  Please call (406) 457-8910 (LCPH office) for more information.
You are presumed to have immunity to measles if you have: written vaccination documentation for measles, mumps and reubella; laboratory evidence of immunity or were born before 1957.