Los Angeles County health officials issued a public warning Friday regarding potential measles exposure at Union Station. An infected train passenger was at the station for several hours last weekend, prompting health officials to advise anyone present during that time to monitor for symptoms.
The passenger arrived at Union Station aboard Amtrak’s Southwest Chief Train 3 at 7:03 a.m. last Saturday. After spending nearly four hours at the major transit hub, the individual departed at 10:55 a.m. on Amtrak Thruway Bus Route 5717, which was bound for Bakersfield, according to the Los Angeles County Department of Public Health.
Consequently, anyone who was at Union Station between 8 a.m. and noon last Saturday may have been exposed. Health officials indicate that individuals at risk could develop measles symptoms anywhere from seven to 21 days after exposure. The final day for people to monitor for symptoms is October 3.
For those who have previously had measles or have received the recommended measles vaccine, there is a likelihood of protection, though monitoring for symptoms is still advised. Individuals who are unimmunized or whose measles immunization status is unknown face a higher risk and should monitor closely for any signs of the illness, the department stated.
The Los Angeles County Department of Public Health is collaborating with the California Department of Public Health and the Centers for Disease Control and Prevention. Together, these agencies are working with various county health departments to inform passengers who were seated near the infected traveler on either the train or the bus about their potential risk of developing measles.
Dr. Muntu Davis, who serves as the Los Angeles County Health Officer, emphasized the importance of community protection. He stated, “As measles cases increase, it is important that residents take steps to make sure they are fully protected.” Dr. Davis further noted that the MMR vaccine is the "safest and most reliable way to prevent measles” and to protect individuals, their families, and the wider community.
Measles is known to spread through the air when an infected person breathes, talks, coughs, or sneezes. Common symptoms include fever, a persistent cough, runny nose, and red and watery eyes. A distinct rash typically appears three to five days after these initial symptoms develop.
If symptoms do emerge, the Department of Public Health advises individuals to stay home and avoid going to school, work, or any public gatherings. It is crucial to contact a health care provider immediately. Additionally, people who suspect they may have been exposed are advised not to enter a health care facility without first calling ahead.
According to the Department of Public Health, two doses of the measles-mumps-rubella (MMR) vaccine offer 97% effectiveness against measles, while a single dose provides 93% effectiveness.
The public health warning comes as national figures for measles continue to be tracked. As of Friday, this year has seen 3,471 measles cases reported nationwide, alongside four measles-associated deaths and 39 outbreaks. Approximately nine percent of these cases have required hospitalization, either for treatment of measles complications or for isolation.
