Universal City, California — Public health officials have issued a measles exposure alert after confirming that a person infected with the virus spent approximately 11 hours inside Universal Studios Hollywood, potentially exposing thousands of visitors at one of Southern California’s busiest tourist attractions.
The warning comes as the United States experiences its largest measles outbreak in more than three decades, prompting renewed calls for vaccination and heightened awareness before attending crowded events.
Health Officials Issue Exposure Warning
According to Los Angeles County public health officials, anyone who visited Universal Studios Hollywood on Sunday between 10 a.m. and 9 p.m. may have been exposed to the highly contagious virus.
Officials said people who were at the park during that time should review their measles immunity status and closely monitor for symptoms over the coming weeks.
County Public Health Officer Dr. Muntu Davis urged residents and travelers to make sure they are protected.
“With summer travel underway, the risk of exposure to infectious diseases may increase,” Davis said, encouraging people to confirm they are vaccinated with the MMR (measles, mumps, and rubella) vaccine, especially before traveling or attending large public gatherings.
Measles Cases Continue to Rise Across the U.S.
The exposure alert comes amid a significant resurgence of measles nationwide.
According to the U.S. Centers for Disease Control and Prevention (CDC), 2,371 confirmed measles cases had been reported across the country by late July 2026.
Health officials say that is the highest annual total recorded since 1991, highlighting growing concerns about outbreaks in communities with lower vaccination rates.
Because measles spreads extremely easily, even a single infected person can expose large numbers of people in crowded indoor locations such as airports, stadiums, and theme parks.
Why Measles Spreads So Easily
Health experts explain that measles spreads through the air when an infected person breathes, talks, coughs, or sneezes.
The virus can remain in the air and on surfaces for up to two hours after an infected person leaves an area, increasing the risk of exposure for others.
People infected with measles can also spread the virus up to four days before the characteristic rash appears and for four days afterward, meaning they may unknowingly infect others before realizing they are sick.
Officials said visitors who were at Universal Studios during the exposure window could develop symptoms between seven and 21 days after exposure.
Anyone who remains symptom-free more than 21 days after the potential exposure is no longer considered at risk.
Symptoms to Watch For
Health officials are advising visitors to monitor for symptoms through Aug. 16.
Early signs of measles typically include:
- Fever
- Cough
- Runny nose
- Red, watery eyes
Health Alert Issued for 5 Popular Los Angeles County Beaches as Dangerous Bacteria Levels Rise
A few days later, a red rash usually begins on the face before spreading across the rest of the body.
According to health authorities, measles can lead to serious complications, particularly among young unvaccinated children, pregnant people, and individuals with weakened immune systems.
Possible complications include pneumonia, encephalitis (brain inflammation), hospitalization, and, in severe cases, death.
Officials Urge Vaccination and Staying Home if Symptoms Develop
The Universal Studios exposure follows another recent measles alert involving Disneyland and Goofy’s Kitchen, where an infected international traveler potentially exposed visitors earlier this year.
Health officials continue to stress that the MMR vaccine remains the most effective protection against measles.
Anyone who develops symptoms after a possible exposure is urged to stay home, avoid school, work, and public gatherings, and contact a healthcare provider before seeking medical care to help reduce the risk of further transmission.
Have you ever received a public health exposure alert after visiting a crowded event? What steps do you think theme parks should take to help protect visitors during outbreaks? Share your thoughts in the comments below.
