As measles outbreaks continue to pop up across the country.
An entire movie theater audience in Orange County, California may have been unwittingly exposed to the virus.
A Placentia woman in her 20s who had recently traveled abroad is currently under voluntary home isolation.
Uproxx reports the woman was diagnosed with measles.
Officials have confirmed that she was considered infectious between April 23 and May 1.
During that time, the unidentified woman attended a screening of Avengers: Endgame at an AMC movie theater last Thursday.
She potentially putting hundreds of people at risk.