Lead
Massachusetts public health officials on Wednesday warned that an out-of-state visitor diagnosed with measles may have exposed others at multiple sites in Boston and Westborough during Dec. 11–12 travel. The person arrived at Boston Logan International Airport on Dec. 11 at 2:39 p.m. on American Airlines flight 2384 from Dallas-Fort Worth, stayed at the DoubleTree by Hilton Hotel Boston-Westborough, and departed Dec. 12 at 9:19 p.m. from Logan on JetBlue flight 117 to Las Vegas. State and federal health partners are now working to identify and notify potential contacts; vaccinated people with two MMR doses are unlikely to develop measles.
Key Takeaways
- The infected traveler arrived at Logan Airport Terminal B on Dec. 11 at 2:39 p.m. on American Airlines flight 2384 and later departed on Dec. 12 at 9:19 p.m. on JetBlue flight 117 to Las Vegas.
- Possible exposure windows include Logan Terminal B (Dec. 11, 2:30–4:45 p.m.), DoubleTree by Hilton Boston–Westborough (Dec. 11, 3:30 p.m. through Dec. 12, 9 p.m.), and Logan Terminal C (Dec. 12, 6–11:30 p.m.).
- Massachusetts has reported zero confirmed measles cases so far this year; nationally, 2025 recorded nearly 2,000 cases across 44 jurisdictions and three deaths.
- Measles is airborne and highly contagious; people who have had measles or received two MMR doses are unlikely to develop illness after exposure.
- Anyone who visited the listed locations during the specified times and is not immune should monitor symptoms and call a health provider before seeking in-person care to avoid exposing others.
Background
Measles was declared eliminated in the United States about 15 years ago, meaning endemic transmission had been interrupted. That status depends on high vaccination coverage; declines in vaccination rates have contributed to the virus reappearing in recent years. In 2025 the U.S. experienced its largest measles case count in over a decade, with nearly 2,000 cases reported in 44 jurisdictions and three deaths, underscoring how quickly outbreaks can reemerge when immunity gaps widen.
Massachusetts generally maintains high MMR coverage, which reduces outbreak risk within the state, but imported cases remain the main route by which measles can re-enter communities. The state Department of Public Health (DPH) coordinates with the U.S. Centers for Disease Control and Prevention (CDC) and local health departments to trace contacts, notify exposed people, and recommend testing and post-exposure measures when warranted.
Main Event
The DPH said the individual arrived at Boston Logan International Airport on Dec. 11 at 2:39 p.m., on American Airlines flight 2384 from Dallas-Fort Worth, Texas. The traveler spent time in Boston and then at the DoubleTree by Hilton Hotel Boston–Westborough, where they stayed overnight and remained at the property until departing the state.
The person left Massachusetts from Logan Airport on Dec. 12 at 9:19 p.m. on JetBlue flight 117 to Las Vegas, Nevada. Health officials identified specific windows and terminal locations during which other travelers or visitors may have been in proximity and therefore at risk of exposure.
DPH and the CDC are conducting contact tracing and notifying people believed to have been exposed. Officials stressed that those who are immune—either from prior infection or two MMR vaccine doses—are unlikely to fall ill, while unimmunized or nonimmune individuals should be alert for symptoms and follow public health guidance.
Analysis & Implications
An imported measles case has limited immediate public-health impact in a state with high vaccination coverage, but even a single infectious traveler can seed secondary transmission in pockets of under-vaccinated populations. The holiday travel season raises the likelihood of interstate and international spread because large numbers of people move through airports and public venues in short periods.
Public health resources are required to investigate exposures, notify contacts, and provide testing or post-exposure prophylaxis when appropriate; these activities divert personnel and laboratory capacity from other priorities. For unimmunized individuals, the risk of developing measles after exposure remains real: measles can cause serious complications, particularly in infants, pregnant people, and immunocompromised persons.
Maintaining high two-dose MMR coverage is the most effective long-term control measure. Short term, targeted outreach to exposed people, rapid testing, and offering MMR vaccine or immune globulin where indicated can blunt potential spread. The interstate cooperation between state DPH, local partners, and the CDC illustrates how public-health systems respond to imported cases.
Comparison & Data
| Jurisdiction | 2025 Confirmed Cases | Deaths |
|---|---|---|
| United States (national) | ~2,000 cases in 44 jurisdictions | 3 |
| Massachusetts (year-to-date) | 0 confirmed cases | 0 |
The table highlights the contrast between a substantial national uptick in 2025 and Massachusetts’ lack of confirmed cases so far this year. Even with zero cases reported statewide to date, the presence of an imported case triggers standard tracing and notification steps to prevent local transmission and protect vulnerable groups.
Reactions & Quotes
State officials framed the event as a reminder of vaccination’s role in preventing outbreaks and pledged coordination with federal and local partners to reach potentially exposed people.
“Measles is a highly contagious, airborne disease that has risen in the U.S. as vaccination rates have fallen; it is preventable and threatens the progress we made after elimination,”
Robbie Goldstein, Massachusetts Public Health Commissioner (paraphrased)
Boston’s health leadership urged residents to verify immunization status ahead of increased holiday travel.
“This case underscores why everyone should be vaccinated—especially with multiple outbreaks nationwide and heavier travel during the holidays,”
Dr. Bisola Ojikutu, Boston Commissioner of Public Health (paraphrased)
Unconfirmed
- No secondary cases linked to this exposure have been publicly confirmed as of the DPH notice.
- The identity and travel history beyond the dates provided by officials have not been released and remain private to protect patient confidentiality.
- It is not yet confirmed whether all potentially exposed travelers have been located or notified.
Bottom Line
The immediate risk to the general public in Massachusetts is low because statewide vaccination coverage remains high, but this imported case demonstrates how quickly measles can travel with holiday mobility. Unimmunized or nonimmune people who were at the specified terminals or the hotel during the listed windows should monitor for symptoms and contact their health-care provider by phone before seeking in-person care.
State and federal public-health agencies are performing contact tracing and outreach; maintaining high two-dose MMR coverage and prompt post-exposure measures where appropriate remain the most reliable defenses against further spread. Travelers should check their immunization records and clinicians should follow DPH testing and reporting guidance.
Sources
- NBC Boston — local news report summarizing the Massachusetts DPH notice
- Massachusetts Department of Public Health — state public-health information and guidance (official)
- U.S. Centers for Disease Control and Prevention (CDC) — federal public health guidance on measles, vaccination, and post-exposure options (official)