For reasons that are actually entirely clear, the year is 2019 and a relic of disease history—fucking measles—is routinely making headlines. In the latest edition of this thing that shouldn't be happening at all, Avengers: Endgame midnight viewers have received word of possible measles exposure.

The Orange County Health Care Agency has announced their first case of measles for 2019, describing the person in question as a Placentia resident in her 20s whose recent travels included a stop in a region that's presently dealing with "widespread measles activity." The estimated infectious window for the woman, currently on voluntary home isolation, is April 23-May 1.

The agency also shared more detailed info on possible exposure for those in the region, including a list of three locations and times for the given window. These locals include an address in Santa Ana, the St. Jude Emergency Department, and an AMC Movie Theater in Fullerton on April 25. Per The Hollywood Reporter, the person had attended a midnight showing of Avengers: Endgame and is estimated to have been at the theater from 11 p.m.-4 a.m. local time.

"Measles is a highly contagious and potentially severe disease that causes fever, rash, cough, and red, watery eyes," Dr. Nichole Quick, OC's Interim County Health Officer, previously said in a press release on the possible exposure dated April 30. "It spreads very easily by air and by direct contact with an infected person, and is contagious from approximately four days before the rash appears through four days after the rash appears. The MMR vaccine is a simple, inexpensive, and very effective measure to prevent the spread of this serious virus."

In short, vaccinations are key and—despite what misguided truthers would want you to believe—have no link to autism. For a rundown on measles vaccine FAQs, including how to determine whether an adult needs another shot, click here.