Those who attended the Kings of Leon concert in Seattle last week are advised to visit their doctor if they're not feeling well.
According to Contactmusic, it has been revealed that one concertgoer may have brought measles to the Key Arena.
The female Kings of Leon fan was reportedly infected just days before the concert, but was well enough to attend.
However, Washington State Department of Health officials fear that she may have passed on the contagious disease to others.
The Guardian reports that measles is spread through the air, which means that other Kings of Leon concertgoers could be affected just by being in the same space as the woman.
The woman who attended the Kings of Leon concert reportedly visited other tourist attractions through the Puget Sound area, including Seattle's Pike Place Market, LeMay Car Museum and Harmon Brewing Company in Tacoma.
A statement released by the department of health for Washington State reads, "If you're not vaccinated, you can get the measles just by walking into a room where someone with the disease has been in the past couple of hours."
A report states, "Most people in our state are immune to measles, so the public risk is low except for people who are unvaccinated. People who haven't been vaccinated or aren't sure if they're immune should ask a health care professional for advice."
Concertgoers who develop a fever or rash should make an appointment with a health care professional immediately.
The Latin Post reports that a measles outbreak in British Columbia has crossed over the border into the Pacific Northwest.
Health officers in British Columbia's Fraser Valley, southeast of Vancouver, say they received more than 350 reports of the childhood disease since an outbreak began in early March.
Whatcom Country Health Officer Greg Stern says the measles outbreak traces back to a community in British Columbia in which families typically avoid vaccinating their children.
Seven cases of measles have been reported so far in 2014 to the state Department of Health, compared to just five throughout all of 2013 in the U.S.
