Measles

Measles Information & Resources

Questions About Measles? Start Here.

Find clear, trusted answers for you, your family, or your patients.

ACIC created this quick reference so you can find what you need without having to sort through multiple sources.

See current Pennsylvania measles information →
Possible Exposure

Think You May Have Been Exposed?

Start by checking current Pennsylvania measles information and your MMR vaccination status. If you are not sure what applies to you, your healthcare provider can help.

If you develop symptoms or think you may have measles, call before arriving for care.
Calling ahead gives the healthcare team time to protect other patients and staff.

See what’s happening in Pennsylvania

Check current measles activity, exposure information, and public-health guidance.

PA Measles Updates

Know what symptoms to watch for

Learn the common signs of measles and how the infection spreads.

CDC Measles Information
For Parents & Caregivers

What About My Baby or Child?

Most children receive their first routine MMR vaccine at 12 to 15 months.

If your baby is younger than 12 months, you have not missed a routine MMR dose. In certain higher-risk situations, an earlier dose may be recommended for infants 6 to 11 months.

If you think your baby or child may have been exposed, contact their healthcare provider promptly. They can help you decide what makes sense based on your child’s age, vaccine history, and the exposure.

See current MMR guidance for babies and children →
MMR Vaccination

Not Sure If You’re Protected?

MMR vaccination provides protection against measles. If you're not sure whether you've had the vaccine, you don't have to figure it out on your own.

Not sure if you’ve had the MMR vaccine?

Ask your healthcare provider. They can help you review your vaccination history and determine what’s recommended for you.

Want to learn more?

See current MMR recommendations for children, adults, travelers, and other groups.

CDC MMR Guidance

Ready to get vaccinated?

Start with your healthcare provider or pharmacy. The Allegheny County Health Department Immunization Clinic is another local option.

ACHD Immunization Clinic
A Local Expert Explains

What Does Measles Risk Look Like in Western Pennsylvania?

Amesh Adalja, MD, FIDSA
Senior Scholar, Johns Hopkins Center for Health Security

Dr. Adalja is a Pittsburgh-area infectious disease physician whose work focuses on emerging infections and public health preparedness.

In this WPXI report, he explains why vaccination levels matter as measles spreads and why some Western Pennsylvania schools may be more vulnerable to outbreaks.

Dr. Adalja is also an ACIC member and a panelist at the 2026 ACIC Immunization Conference.
View his Johns Hopkins profile →
Beyond the Quick Answers
Explore measles with Dr. Adalja in more depth
Listen to his conversation on WISR/WBUT’s The Daily Focus for more context on measles in Pennsylvania and what it could mean locally.
▶ Listen on Spotify →
For Healthcare Professionals

Clinical Resources

Quick access to Pennsylvania guidance and practical answers to common measles and MMR questions.