07/10/2026
Measles is a highly infectious viral illness, and multiple outbreaks are happening around the world, including Australia.
Australia is currently experiencing higher numbers of imported cases of measles in overseas visitors and residents returning from overseas, and the potential for local outbreaks is a real concern.
While Australia has maintained its World Health Organization-certified measles elimination status, other industrialised countries, such as Canada, Spain and the UK, have recently lost theirs during rising global outbreaks.
Measles is one of the most contagious diseases known. Even relatively small immunity gaps in communities can create opportunities for the virus to spread when cases are imported from overseas.
Most of this year’s measles cases have been recorded in unvaccinated or inadequately vaccinated adults aged 20 to 49 years.
Measles is highly infectious –a single case has the potential to infect up to 18 other unvaccinated or inadequately vaccinated people.