Measles Vigilance: Australia’s Vaccination Rates Dip, Experts Warn
Australia’s hard-won status as a measles-free nation, achieved over a decade ago, is facing a renewed challenge. While the elimination itself remains a significant public health triumph, experts are sounding the alarm over stagnating vaccination rates, a trend that could jeopardise this crucial achievement. Recent alerts from Victoria and New South Wales have highlighted an ongoing risk of measles outbreaks, largely attributed to international and interstate travel.
The concern is particularly acute for young children. Data from the Department of Health indicates that vaccination coverage rates for childhood immunisations have dipped below the aspirational target of 95 per cent over the past three years. This decline is a complex issue, with several contributing factors potentially at play. These include the reopening of borders post-pandemic, lingering effects of a global anti-vaccine sentiment amplified by certain political figures, and the increasing cost of living pressures that can make healthcare less accessible.
Understanding the Measles Threat
Measles is a highly contagious viral illness that spreads rapidly through airborne droplets when an infected person coughs or sneezes. The World Health Organisation (WHO) estimates its contagiousness to be approximately 12 times that of influenza. Symptoms typically include a cough, rash, high fever, and red eyes, and in severe cases, it can lead to serious complications and even death.
“What happens in one part of the world impacts many parts of the world,” explains Meru Sheel, a professor of infectious diseases at the University of Sydney. “We really need to think about our ability for checks and balances and ensuring a policy consistent with the evidence, which is where we are.”
A Global Surge and Local Concerns
Globally, measles cases have seen a concerning resurgence. The United States, for instance, experienced record highs in 2025, with over 900 cases recorded in 2026 alone. This global trend underscores the importance of maintaining high vaccination coverage within Australia to prevent imported cases from sparking local outbreaks.
The National Notifiable Disease Surveillance System reports a stark increase in measles cases in Australia, rising from zero in 2021, a period of strict COVID-19 lockdowns, to 181 cases in 2025. This upward trend is corroborated by the National Centre for Immunisation Research and Surveillance, which indicates that childhood vaccination rates remain significantly lower than pre-pandemic levels.
Key Vaccination Data and Trends
- Delayed Vaccinations: In 2024, a significant proportion of children received their vaccinations late.
- One in three children received their first dose of the measles-mumps-rubella (MMR) vaccine later than recommended.
- One in five children received their second dose of a diphtheria-tetanus-pertussis (DTP)-containing vaccine later than recommended.
Factors Influencing Declining Coverage
While the aspirationally free nature of the vaccine itself is a positive, access remains a significant hurdle. Professor Sheel points out that the issue is less about widespread disinformation and more about practical barriers.
“The vaccine dose is free, but getting to the clinic and the cost of seeing a doctor can be prohibitive, and then there are issues around knowledge and doubts around vaccination,” she stated.
Furthermore, misinformation and disinformation surrounding vaccine safety are also playing a role, according to ANU epidemiologist Martyn Kirk. He noted that parents are increasingly turning to social media, which can be an unreliable source of health information, contributing to hesitancy.
“In general, we have seen a decline in childhood vaccination rates, but governments have been working very strongly to try and promote it as a healthy and safe way of controlling diseases,” Kirk commented.
The Dangers of Measles
The consequences of measles infection can be particularly severe for vulnerable populations. It poses a greater risk to very young children, pregnant women, and individuals with compromised immune systems.
“It’s more infectious even than COVID,” Kirk emphasised, highlighting the urgent need for renewed focus on public health initiatives to bolster vaccination rates and protect the community from this preventable disease.
