Health authorities in Los Angeles County issued an urgent public warning Wednesday after an individual infected with measles traveled through Los Angeles International Airport earlier this month. The infected traveler arrived on Cathay Pacific Flight CX 884 on June 11 while contagious, potentially exposing hundreds of passengers and guests at the airport and a nearby lodging facility. Officials from the Los Angeles County Department of Public Health confirmed the case marks the sixth measles infection documented in the county during 2026.
The exposure window has raised concerns among health officials as summer travel season intensifies and the region prepares to welcome international visitors for FIFA World Cup events scheduled in the area. Measles remains highly contagious, spreading through airborne particles when an infected person coughs or sneezes, making crowded transportation hubs particularly vulnerable to transmission.
Specific locations and times identified for potential exposure
Public health investigators identified two primary locations where exposure may have occurred. Anyone present at the Tom Bradley International Terminal between 10:00 a.m. and noon on June 11 could have been exposed to the virus. The terminal serves as the main gateway for international flights at LAX, processing thousands of passengers daily during peak travel periods.
The second exposure site involves the Hilton Los Angeles Airport Hotel, located at 5711 W. Century Boulevard. Officials determined that potential exposure occurred at this property between 11:15 a.m. and 12:15 p.m. on the same date. The hotel sits adjacent to the airport complex and frequently accommodates international travelers arriving on long-haul flights.
Federal coordination underway to notify flight passengers
The Centers for Disease Control and Prevention has initiated contact tracing efforts in collaboration with local health departments. Federal officials are working to identify and notify passengers who were seated in proximity to the infected individual during the international flight. The notification process aims to alert those at highest risk and encourage them to monitor for symptoms or seek medical evaluation if needed.
Flight manifest data and seating charts allow health officials to prioritize outreach to passengers who spent extended periods in close quarters with the infected traveler during the flight from Asia to Los Angeles.
Symptom monitoring period extends through early July
Individuals who visited either location during the specified timeframes should remain vigilant for symptoms developing between seven and 21 days following exposure. Health officials set July 2 as the final date for symptom monitoring based on the virus’s typical incubation period. The measles incubation period varies among individuals, with most cases showing symptoms within 10 to 14 days after initial exposure.
Recognizable symptoms include the following progression:
- Fever that may reach 104 degrees Fahrenheit or higher
- Persistent cough and runny nose
- Red, watery eyes showing signs of inflammation
- Characteristic rash beginning on the face before spreading downward across the body
- Small white spots inside the mouth, known as Koplik’s spots
The rash typically appears three to five days after initial symptoms begin and spreads from the hairline down to the feet over several days. Anyone experiencing these symptoms should contact their healthcare provider by phone before visiting a medical facility to prevent potential exposure to others in waiting rooms.
Vaccination remains most effective prevention measure
Dr. Muntu Davis, Los Angeles County Health Officer, emphasized the critical importance of vaccination as measles cases increase both domestically and internationally. The MMR vaccine, which protects against measles, mumps and rubella, provides the safest and most reliable protection for individuals, families and communities. Two doses of the MMR vaccine offer approximately 97 percent effectiveness against measles infection.
Health officials recommend that residents verify their vaccination status, particularly before international travel or if they may have been exposed. Children typically receive their first MMR dose between 12 and 15 months of age, with a second dose administered between ages four and six. Adults born after 1957 who lack documentation of immunity should receive at least one dose of MMR vaccine.
Rising measles cases coincide with increased international travel
The Los Angeles County case represents part of a broader pattern of measles detections at major American airports during 2026. Recent months have seen confirmed measles cases identified at four major transportation hubs across the country, coinciding with peak holiday travel periods. The convergence of increased international travel and pockets of low vaccination coverage creates conditions favorable for measles transmission.
Global measles outbreaks have intensified in several regions, with at least 46 children reported dead in one international outbreak as the virus spreads across multiple countries. International health organizations have documented measles resurgence in areas where vaccination rates have declined or where conflict has disrupted routine immunization programs. Travelers returning from regions experiencing active outbreaks pose potential risk for importing the virus to communities with vulnerable populations.
Los Angeles County health officials continue investigating the current case and monitoring for any secondary infections that may emerge from the June 11 exposures. The department has not released additional details about the infected traveler’s origin or destination. Residents with questions about potential exposure or vaccination status can contact the Los Angeles County Department of Public Health through their county helpline for guidance specific to their circumstances.
