Study warns 1.7 million Australians remain vulnerable to measles
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Australia’s protection against measles may be weaker than previously thought, with new research estimating about 1.7 million people were not adequately protected against the virus in 2019.
The study, led by the National Centre for Immunisation Research and Surveillance, found that 93.3 per cent of Australians had measles immunity at the time. That is within the World Health Organization’s target range of 93–95 per cent, but leaves little room for further declines.
Researchers warn the situation may have worsened since then as childhood vaccination rates have fallen following the COVID-19 pandemic.
Measles cases are also rising. National notifications increased from single figures in 2022 to 181 cases in 2025, with 113 cases already recorded in 2026.
The largest immunity gaps were found among babies who are too young to complete their vaccination schedule and people born from 1977 onwards. Every birth group from 1977 had at least 5 per cent estimated to be vulnerable.
People aged 15 to 35 accounted for about half of Australia’s reported measles cases between 2008 and 2022.
Experts warn overseas travel could increase the risk of measles being brought into Australia, particularly as cases rise internationally.
Australia has maintained measles elimination status since 2014. However, countries including Canada, Spain and the UK have recently lost that status after immunity levels fell.
Health experts are urging Australians born from 1966 onwards to check their vaccination records, particularly before travelling overseas.
Those unsure whether they have received two doses of a measles-containing vaccine are advised to speak with a GP or immunisation provider.
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Source : News.com
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