Measles Resurgence: Risks, Vaccination and Travel Advisories

Measles, a highly contagious viral infection, is once again a public health concern globally and in Europe. Although Ireland maintains its measles-free status, increasing outbreaks in neighboring countries like the UK and across Europe necessitate vigilance and proactive measures. This article provides an overview of the current measles situation, associated risks, the importance of vaccination, and travel recommendations.

The Global and European Landscape

The World Health Organization (WHO) announced in January 2026 that the UK had lost its measles elimination status, a consequence of sustained transmission and a significant rise in cases. In 2024, the UK reported 3,600 suspected cases, with over 1,000 cases recorded in 2025. AP News reports that these figures reflect low vaccination rates, falling below the 95% threshold needed to achieve herd immunity.

Across Europe and Central Asia, the WHO and UNICEF reported a decrease in measles cases from 127,000 in 2024 to just under 34,000 in 2025. However, this improvement is tempered by ongoing vaccine hesitancy, leaving young children vulnerable to this potentially life-threatening illness.

Ireland’s Status and Concerns

Ireland is currently designated by the WHO as a measles-free country, meaning there has been no endemic transmission for up to 12 months. However, given the outbreaks in the UK, Europe, and the U.S., health authorities are urging caution. The Health Protection Surveillance Centre (HPSC) issued a travel advisory in February 2026 for individuals traveling to Europe, particularly for ski holidays or the Winter Olympics in Italy, emphasizing the importance of recognizing measles symptoms and ensuring up-to-date MMR vaccination.

HSE data from the second quarter of 2025 indicates an MMR vaccine uptake of 87.6% among children aged 24 months, significantly below the WHO’s 95% target. This low uptake raises concerns about potential outbreaks within Ireland.

Understanding Measles: Symptoms and Risks

Measles is a highly infectious virus spread through the air via respiratory droplets. It is more contagious than both influenza and COVID-19, with estimates suggesting nine out of ten non-immune individuals exposed to the virus will become infected.

Symptoms typically appear 7-14 days after infection and include:

• Fever
• Cough
• Runny nose
• Koplik spots (painless white spots inside the mouth)
• A distinctive blotchy rash on the face, trunk, and limbs

Measles can lead to serious complications, including:

• Brain inflammation (encephalitis), potentially causing seizures, hearing loss, or intellectual disability
• Pneumonia
• Eye inflammation (and possible vision loss)
• Poor pregnancy outcomes, such as miscarriage
• Rarely, subacute sclerosing panencephalitis (SSPE), a fatal brain condition that can develop years after the initial infection

Complications are most common in children under five, adults over 20, pregnant women, and individuals with weakened immune systems. Measles is fatal in up to three of every 1,000 cases.

The Power of Vaccination

Two doses of the MMR vaccine provide 97% protection against measles, a significantly higher rate than many other vaccines. While rare, breakthrough infections can occur even with full vaccination, these cases tend to be milder and less contagious.

The MMR vaccine has an excellent safety profile. Common side effects include temporary soreness at the injection site, low-grade fever, and muscle pain. The widely debunked claim that measles or other vaccines cause autism has contributed to vaccine hesitancy and declining vaccination rates.

Protecting Yourself and Your Family

If you are planning travel, especially to areas experiencing measles outbreaks, it is crucial to check your MMR vaccination status. The HSE urges everyone to be aware of the signs and symptoms of measles and ensure their vaccinations are up to date.

Here are key steps to take:

• Check Your Vaccination Status: If unsure, consult your doctor or consider a blood test to determine immunity.
• Vaccinate: If you or your child are not up to date, vaccination can be arranged through your GP. The MMR vaccine is free for those not age-appropriately vaccinated.
• Infants Traveling: Infants aged 6-12 months are eligible for a free MMR vaccine at their GP at least 14 days before travel.
• If You Suspect Measles: Contact your doctor immediately and maintain the infected individual isolated from others who are not protected.

The MMR vaccine is offered to all children in Ireland as part of the Primary Childhood and Schools Immunisation Programmes, with doses at 12 months (MMR1) and in junior infants (MMR2).

Looking Ahead

Measles outbreaks are preventable through widespread vaccination. By staying informed, taking proactive steps to protect yourself and your family, and engaging in respectful conversations with those who are vaccine hesitant, we can work towards containing outbreaks and eliminating this dangerous disease.