Measles exposure reported at LAX, nearby Hilton hotel after June flight

Health officials in Los Angeles County have confirmed that a traveler infected with measles passed through Los Angeles International Airport and stayed at a nearby hotel on June 11, potentially exposing hundreds of people to one of the most contagious diseases on the planet. The case marks the sixth measles infection reported in Los Angeles County this year and comes as summer travel season ramps up and international visitors flood into the region for FIFA World Cup events.

The Los Angeles County Department of Public Health identified two exposure windows: the Tom Bradley International Terminal at LAX between 10 a.m. and noon on June 11, and the Hilton Los Angeles Airport Hotel at 5711 W. Century Blvd. between 11:15 a.m. and 12:15 p.m. that same day. The infected traveler arrived aboard Cathay Pacific Flight CX 884. The CDC is working with local health departments to notify passengers who were seated near the infected individual.

Anyone present during those windows could develop symptoms between seven and 21 days after exposure, meaning the window for monitoring extends through July 2.

## Why This Exposure Matters More Than You Think

Measles isn't a minor illness. It's one of the most contagious viruses known to science. The CDC estimates that a person with measles can infect up to 18 other people in a population where no one is vaccinated. The virus lingers in the air for up to two hours after an infected person leaves a room. You don't need to be in the same terminal, or even the same part of the terminal, to be at risk — you just need to have passed through the same air.

That's what makes an airport exposure so concerning. LAX handles roughly 200,000 passengers per day during summer travel season. The Tom Bradley International Terminal is one of the busiest international gateways on the West Coast. A single infectious person passing through during peak hours could have crossed paths with travelers heading to dozens of domestic and international destinations, potentially seeding outbreaks far from Los Angeles before anyone realizes they've been exposed.

The timing compounds the risk. FIFA World Cup matches are being held in the Los Angeles area, drawing international visitors from countries with varying — and in many cases, significantly lower — vaccination rates than the United States. More travelers from more places means more opportunities for the virus to find susceptible hosts and more vectors for spreading it to new communities.

## The Broader Resurgence

This LAX exposure isn't an isolated incident. It's part of a global resurgence of a disease that the United States declared eliminated in 2000.

Measles cases have been climbing worldwide for several years, driven by declining vaccination rates in both developed and developing nations. The World Health Organization reported that at least 46 children have died amid the current global outbreak. In the United States, cases have ticked up as vaccination rates have slipped below the 95% threshold needed for herd immunity in a growing number of communities.

The math is unforgiving. Measles has a basic reproduction number between 12 and 18 — meaning each infected person will transmit the virus to 12 to 18 others in a fully susceptible population. For comparison, the original strain of COVID-19 had an R0 of roughly 2 to 3. Even the Omicron variant, one of the most transmissible respiratory viruses ever documented, has an estimated R0 of around 10 to 18 in unvaccinated populations. Measles is in the same ballpark — and it's far more likely to cause severe complications, particularly in young children.

Complications from measles include pneumonia, encephalitis (brain swelling that can cause permanent disability), and a rare but fatal condition called subacute sclerosing panencephalitis that can develop years after the initial infection. The disease kills approximately 1 to 3 out of every 1,000 children who contract it.

## The Vaccine Gap

The MMR (measles, mumps, rubella) vaccine is one of the most effective vaccines ever developed. Two doses provide about 97% protection against measles. The vaccine has been in use since 1963 and has prevented an estimated 60 million deaths globally over the past two decades, according to the WHO.

Yet vaccination rates have declined. In the U.S., kindergarten vaccination coverage fell to 93.1% nationally for the 2023-24 school year, below the 95% target. Some states and communities are significantly lower. Exemptions for personal or religious beliefs have risen in 40 states over the past decade, creating pockets of vulnerability where outbreaks can ignite and spread rapidly.

As Los Angeles County Health Officer Dr. Muntu Davis emphasized: "As measles cases increase, it is important that residents take steps to make sure they are fully protected. The MMR vaccine is the safest and most reliable way to prevent measles and protect yourself, your family, and your community."

The advice applies well beyond Los Angeles. Every major international airport is a potential transmission point. Every community below the 95% vaccination threshold is a potential outbreak zone. The virus doesn't care about state borders, political opinions, or personal beliefs. It only cares about finding susceptible hosts.

## What to Do If You May Have Been Exposed

If you were at the Tom Bradley International Terminal at LAX between 10 a.m. and noon on June 11, or at the Hilton Los Angeles Airport Hotel between 11:15 a.m. and 12:15 p.m. that day, the Los Angeles County Department of Public Health recommends the following steps:

First, verify your vaccination status. If you received two doses of the MMR vaccine, you are approximately 97% protected and at very low risk. If you've only had one dose, you're about 93% protected — still high, but not as strong as full coverage. If you're unsure of your vaccination history, a simple blood test can determine whether you have measles antibodies.

Second, monitor for symptoms through July 2. Measles typically begins with fever, cough, runny nose, and red, watery eyes, followed by a characteristic rash that starts on the face and spreads downward. If symptoms develop, do not go directly to a healthcare facility — call ahead so the facility can prepare isolation measures and prevent further transmission.

Third, if you're unvaccinated and were exposed, contact your healthcare provider immediately. Post-exposure prophylaxis — either the MMR vaccine given within 72 hours of exposure, or immune globulin given within six days — can significantly reduce the risk of infection.

## What This Means For You

If you're traveling this summer — and with World Cup events, that includes millions of people — check your vaccination status before you go. Two doses of the MMR vaccine provide near-complete protection. If you're not sure whether you had both doses, get one now. It's safe to receive an extra dose, and the protection it provides is dramatically better than the alternative.

If you have young children, talk to your pediatrician about the MMR vaccination schedule. The first dose is typically given at 12 to 15 months, with the second at 4 to 6 years. If you're traveling internationally with an infant between 6 and 11 months, the CDC recommends an early dose for additional protection.

If you're a business owner or manager with employees who travel internationally, consider reviewing your company's travel health policies. Measles isn't just a personal health issue — an infected employee can spread the virus to coworkers, clients, and family members. Ensure that travel insurance covers medical evacuation, and that employees know the symptoms and what to do if they suspect exposure.

The LAX exposure is a reminder that in a world of global travel, vaccine-preventable diseases are always one flight away. The question isn't whether measles will show up at an airport near you. It's whether your community has enough protection to stop it from spreading when it does.