The person was present at locations in 108 Mile Ranch and Lone Butte between March 1 and March 3, including Tim Hortons, Spruce Hill Resort, and Interlakes Regional Library.
The latest outbreak came from people who were thought not fully immunized.
State health officials said on Friday that a one-year-old in Pima County has been diagnosed with measles.
The race is on to get vulnerable people in the region vaccinated.
Sunday, March 3, 2019 - Spruce Hills Resort, 108 Mile Ranch, 4:15 to 7:30 p.m. Symptoms consist of a fever of 101F or higher, red, watery eyes, cough and runny nose which is followed by a rash that is read, raised and blotchy.
People who think they might have been exposed to measles or have symptoms are asked to contact their general practice first.
Interior Health asks to please call ahead to your doctor's office or the hospital if you think you may have been exposed to measles and have developed symptoms. This will allow the office or hospital to make a plan to prevent other people from potential exposure.
Anyone who believes they may be at risk can call a public health nurse at 1-855-549-6364 to review your vaccination history, determine your immunity and arrange for post-exposure treatment if necessary.
It said the best protection from the disease was for people to have two doses (measles, mumps and rubella) vaccinations.
You can get the vaccine for free at your local community health centre. It remains an important cause of death among young children globally, despite the availability of a safe and effective vaccine.
Measles is a serious and highly contagious viral disease where up to 30 per cent of those who catch it will develop complications. If you have any concerns about what you see in comments, email the editor in the link above.