The Centers for Disease Control and Prevention is warning that measles cases in the U.S. are likely to increase as spring and summer travel ramps up. So far in 2026, 1,782 cases have been reported nationwide, signaling a continued surge.
Why Cases May Rise
Health officials say increased domestic and international travel, along with large seasonal gatherings, could accelerate the spread of measles. The CDC has urged state and local agencies to quickly report infections, conduct contact tracing, and focus outreach on under-vaccinated communities.
Vaccination Remains Key
The MMR vaccine remains the most effective protection. One dose is about 93% effective, while two doses offer roughly 97% protection.
- First dose: 12–15 months
- Second dose: 4–6 years
For infants traveling to outbreak areas, an early dose between 6–11 months may be recommended, followed by the standard two-dose schedule.
Who Is Most at Risk?
CDC data shows about 92% of cases involve people who are unvaccinated or have unknown vaccination status. Only a small percentage of infections occur in those fully vaccinated.
Travelers are advised to monitor symptoms for up to three weeks after returning from affected areas and seek medical care if exposure is suspected.
Growing National Concern
Cases have been reported across dozens of states, raising concerns about sustained transmission. In 2025, the U.S. recorded 2,288 measles cases—the highest in more than three decades—and the first measles deaths in 10 years.
If transmission continues for 12 consecutive months, the U.S. risks losing its measles elimination status, a milestone achieved in 2000.
What to Know Before Traveling
Health officials recommend ensuring vaccinations are up to date at least two weeks before travel. With cases rising, prevention efforts remain critical to limiting further spread in the months ahead.
For more health guidelines and updates, stay tuned to Que Onda Magazine.