A West Australian woman has died after contracting meningococcal disease.
The woman, believed to be aged in her 20s, is the fifth victim of the serogroup W type of meningococcal in WA this year.
So far this year there have been 40 cases of the disease, up from 23 in 2016, with a spike in the number of W and Y strains well above the long-term average of less than one case per year.
A free vaccination program for people aged 15 to 19 is being offered in WA, Tasmania, NSW, Queensland, and Victoria in 2017 and 2018.