As measles outbreaks spread across America, the CDC is now advising certain U.S. travelers to get an additional vaccine dose before visiting hotspot regions in Texas and Kansas.
At a Glance
- CDC has recommended an extra measles vaccine dose for travelers to specific outbreak areas in the United States
- Over 600 measles cases have been reported in 21 states this year, with three deaths in Texas and New Mexico
- Most adults with two previous doses don’t need additional shots, but should check local health guidelines when traveling to outbreak areas
- Infants traveling to affected areas should receive an early dose before 12 months, followed by two regular doses
- The MMR vaccine is 93% effective against measles after one dose and up to 97% effective after two doses
CDC Issues New Domestic Travel Advisory
The Centers for Disease Control and Prevention (CDC) has updated its measles vaccination guidance, now recommending an additional vaccine dose for some travelers within the United States. This advisory specifically targets individuals planning to visit regions experiencing ongoing measles outbreaks, including certain counties in Texas and Kansas. The recommendation comes amid growing concern about the spread of this highly contagious disease, which has made a concerning comeback in multiple states despite previous successful prevention efforts.
Local health authorities in affected areas have established specific guidelines recommending extra MMR (Measles, Mumps, Rubella) vaccine doses. These recommendations apply particularly to individuals who have not completed their standard vaccination schedule. While most fully vaccinated adults remain protected, those traveling to outbreak zones should consult with healthcare providers about their vaccination status and potential need for additional protection.
The U.S. has begun recommending additional measles vaccines for some *domestic* travel
From new @CDCgov guidance sent to health departments this week
It's unclear why this wasn't also published on agency's websitehttps://t.co/dhF5Q7KRw4 pic.twitter.com/m6VaEk8B9a
— Alexander Tin (@Alexander_Tin) April 10, 2025
Understanding Measles Vaccine Protection
The standard recommendation for measles protection includes two doses of the MMR vaccine, typically administered during childhood. The first dose is given at 12-15 months of age, with the second following at 4-6 years. For travelers visiting outbreak areas, local health departments may recommend adjustments to this schedule, including extra doses for certain individuals or accelerated vaccination for young children who haven’t completed the full schedule.
According to a CDC report: “Two doses of the MMR vaccine are recommended by doctors as the best way to protect against measles, mumps, and rubella.”
The effectiveness of the MMR vaccine is well-established. One dose provides approximately 93% protection against measles, 72% against mumps, and 97% against rubella. A second dose increases this protection even further. For most individuals who received both recommended doses as children, immunity typically lasts throughout their lifetime, eliminating the need for routine boosters under normal circumstances.
Current Outbreak Situation
This year has seen a troubling resurgence of measles across the United States, with over 600 confirmed cases reported across 21 states. The outbreak has resulted in three deaths in Texas and New Mexico, highlighting the serious nature of this disease. Beyond the initially identified hotspots, local outbreaks have also been reported in several other states including New Jersey, Georgia, Ohio, Indiana, and Colorado, raising concerns about potential further spread.
“CDC’s clinical vaccination guidance for measles outbreaks has not changed. During measles outbreaks, health departments may provide additional recommendations to protect their communities,” said a spokesperson for the agency.
For parents with infants who must travel to affected areas, the CDC advises an early first dose before 12 months of age, followed by completion of the standard two-dose series according to the regular schedule. This protective measure helps reduce the risk of infection in this particularly vulnerable age group. Adults born before 1957 are generally considered immune due to likely childhood exposure when the disease was common.
Vaccination Resources and Considerations
Measles vaccines are widely available through primary care physicians, pharmacies, and public health clinics throughout the country. Most health insurance plans cover recommended vaccines, and the Vaccines for Children Program provides no-cost vaccines for eligible children who might not otherwise be vaccinated. All U.S. states require certain vaccinations for children entering childcare or school, though specific requirements may vary by state.
While the vast majority of people can safely receive the MMR vaccine, certain individuals should not, including those with severe allergies to vaccine components, pregnant women, and people with severely compromised immune systems. Side effects are generally mild, such as soreness at the injection site or low-grade fever. Serious side effects are rare. Those unsure about their vaccination status should consult medical records or healthcare providers.
