If you’re planning a trip, it’s important to be aware that measles cases are rising both globally and here at home. So far in 2025, the CDC has reported 1,356 measles cases and 32 outbreaks in 41 U.S. jurisdictions. 

In Arizona, there have been 5 reported cases of measles, four were travel related. 

Because measles is extremely contagious, taking simple steps before you travel and after you return can help protect you, your family, and others in your community.

Before You Travel: Get Vaccinated

The most effective way to protect yourself is by getting the MMR (measles, mumps, rubella) vaccine.

  • Two doses of MMR are about 97% effective in preventing measles.
  • Make sure you’re fully vaccinated at least 2 weeks before your trip.

Check your immunization records or speak with your healthcare provider, especially if you’re traveling with young children, infants, or anyone with a weakened immune system.

While Traveling: Be Aware

Measles spreads through the air and can linger in enclosed spaces even after a contagious person has left. Airports, planes, and crowded places can increase your risk of exposure.

While you’re traveling, practice good hygiene, be aware of how you’re feeling, and take extra precautions around high-risk individuals like babies or those with medical conditions.

After You Return: Watch for Symptoms

After travel, keep an eye out for measles symptoms for 21 days:

  • Fever of 101°F or higher
  • Red, watery eyes
  • Cough or runny nose
  • A red, blotchy rash that usually starts at the hairline and spreads downward

Measles is contagious four days before the rash appears to four days after, which means people can spread it to others before they even know they’re sick.

If you develop symptoms:

  • Call ahead to your doctor, urgent care, or emergency department before going in.
  • Let them know about your symptoms and recent travel so they can protect others and ensure staff are vaccinated.

What Arizona Is Doing

Arizona’s public health teams work year-round to track and respond to measles cases and exposures, especially those linked to travel.

If you are identified as having been exposed (for example, during a flight), your local health department will contact you. They will:

  • Help you verify your vaccination status
  • Give you guidance on what to watch for
  • Support you with steps to protect yourself and others

If you’re concerned about a possible exposure, don’t wait and contact your healthcare provider.

Planning a Trip? Stay Informed and Protected

Your actions matter. Not just for your own health, but for your family and your community. Learn more about measles and what to do if you’ve been exposed by visiting our Measles information page.

Travel well. Travel safe. Protect yourself and those around you.