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Written by , M.D., Clinical Assistant Professor, Arizona College of Osteopathic Medicine, Multispecialty Clinic 

Now that students are back in school, are you concerned about whether measles may still be active? As of September 16, 2025, the Centers for Disease Control reports 1,491 in the 42 states listed on their website, as well as some cases in international travelers visiting the United States.

Measles spreads through respiratory droplets when an infected person coughs or sneezes, and the virus can live in the air or on surfaces for hours. It is HIGHLY contagious and can stay in a room for up to two hours. Sadly, some unvaccinated children have died this year from measles.

What is Measles?

Measles is a highly contagious viral infection that mainly affects young children. Though measles might initially appear like a common cold, it has the potential to lead to serious complications.

Symptoms of Measles

• High fever
• Cough
• Runny nose
• Eye redness (typically without discharge)
• Characteristic rash (starts on the face and spreads down body)

Potential Complications

• Pneumonia (lung infection)
• Ear infections
• Brain infection or swelling (which can be life-threatening)
• Long-term effects (rare, but serious, and can occur many years later, leading to devastating brain damage and death)

Why Measles is Dangerous

Measles can spread quickly because its symptoms often resemble those of a cold. This makes it harder to diagnose early, which means it has more time to spread. Because of its contagious nature, measles can affect people who are already vulnerable, leading to more severe outcomes.

Those most at risk include:

• Young children (babies less than a year of age)
• Elderly individuals
• Pregnant women
• People with weakened immune systems (due to underlying health conditions or medications)

How to Protect Your Child

• Vaccination
  The MMR vaccine (measles, mumps, rubella) is the most effective way to prevent measles. Children should receive their first dose at 12-15 months and a second dose at 4-6 years of age.
• Ensure Immunization
  If your child has not yet received the MMR vaccine, please schedule an appointment with your pediatrician.
• Stay Home When Sick
  Children with measles symptoms should stay home. Contact your doctor immediately.

Why Vaccination is Crucial

• Vaccination is the best way to protect your child, other children, and vulnerable individuals in the community (such as babies too young to be vaccinated and individuals with compromised immune systems).

To schedule your child’s annual checkup, call 623-537-6000 or visit the ¾ÅÉ«ÊÓƵ Glendale .