Measles remains one of the most infectious agents known of and so far in Australia this year, close to 100 people have been diagnosed with the illness.
The figure is almost equal to the number cases diagnosed for the whole of 2018 at 103, sparking a national call for people to check their immunisation history.
While no cases have been confirmed in Tasmania this year, infectious disease specialist Dr Katie Flanagan said there was no room for complacency.
"Measles vaccinations prevent the spread of this highly infectious and potentially fatal condition," she said.
"If anybody was to bring a case of measles into Tasmania, we would have the same issues and we would need to be very careful, because it's so infectious.
"If you don't get 95 per cent of people covered with vaccination, you don't get good herd immunity and anyone who is not vaccinated is vulnerable."
Tasmania's first case of measles since 2016 was confirmed in October last year, after an East Coast resident was infected during travel in Southeast Asia.
Dr Flanagan said people travelling to measles endemic countries should consider measles as a travel vaccination, with cases worldwide increasing substantially in recent years.
"We know for every single case that comes into the country, and it's normally unvaccinated travellers, they will infect a whole host of other people," she said.
"It can get out of control quite quickly, because it is so infectious. It's a huge problem. If you walk within two metres of a patient with measles, you have a very high chance of getting measles."
The measles vaccine is free under the National Immunisation Program for children at age 12 months with a booster at 18 months.