'Avengers' audience potentially exposed to measles at SoCal screening

This file photograph reveals the skin rash on a patient’s abdomen 3-days after the onset of a measles infection. The image was captured at New York Hospital-Cornell Medical Center. This file photograph reveals the skin rash on a patient’s abdomen 3-days after the onset of a measles infection. The image was captured at New York Hospital-Cornell Medical Center. Photo: Centers For Disease Control And Prevention Photo: Centers For Disease Control And Prevention Image 1 of / 14 Caption Close 'Avengers' audience potentially exposed to measles at SoCal screening 1 / 14 Back to Gallery

A 20-year-old Orange County resident potentially exposed a group of moviegoers to measles, officials said, reporting the county's first measles case of 2019.

Prior to her voluntary isolation at her Placentia, Calif. home, the woman visited the AMC Movie Theater on Lemon St. in Fullerton, Calif., reportedly to attend a late-night screening of "Avengers: Endgame." The woman was in the theater between 11 p.m. and 4 a.m. on April 25.

ALSO: San Francisco releases list of places visited by person with measles in early April

The infected individual also visited 5 Hutton Centre Dr. in Santa Ana from on April 23, 24 and 25 between 7:45 a.m. and 7:15 p.m., as well as the St. Jude Emergency Department on Valencia Mesa Dr. in Fullerton between 7 a.m. and 9 a.m. on April 27, the Orange County Health Care Agency said in a statement.

Those who visited these locations around the same time as the 20-year-old woman are advised to review their vaccination history to ensure they have been vaccinated for measles; monitor themselves for illness with fever and/or an unexplained rash; and should stay at home and call a health care provider immediately if symptoms develop.

Those with questions may call the HCA Health Referral Line at 1-800-564-8448.

ALSO: At these 7 Bay Area schools, more than half of students are unvaccinated

An increase in measles cases has been reported across the U.S. and officials are advising people to get the MMR vaccine, which is a "very effective measure to prevent the spread of this serious virus," said Dr. Nichole Quick, Interim County Health Officer for Orange County, in a statement.

"Measles is a highly contagious and potentially severe disease that causes fever, rash, cough, and red, watery eyes," he said. "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."

Read Michelle Robertson's latest stories and send her news tips at michelle.robertson@sfgate.com.

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