Three more Western Australian’s have been diagnosed with meningococcal disease.
The Department of Health issued a statement on Thursday morning saying three adults were recovering in hospital after contracting the potentially deadly disease.
Two had been diagnosed with the serogroup B strain while the other with serogroup W.
So far this year 25 people have contracted meningococcal, compared with 23 cases in 2016.
The department said despite he number of meningococcal cases dropping to a low of just 16 in 2013, the disease was again on the rise due to new strains of serogroup W and Y.
Meningococcal disease is an acute bacterial infection that can cause death within hours if not recognised and treated in time.
The disease is most common in babies and toddlers and teenagers and young adults but can occur at any age.
Symptoms include high fever, chills, headache, neck stiffness, nausea, vomiting, confusion and joint pain.
Young children may have a fever, appear lethargic, have a pale or blotchy complexion or a rash or be vomiting.
Teenagers aged between 15 and 19 years old, as of 2017, receive a free combined vaccination against the A, C, W and Y strands through school or university as part of the recently introduced WA Meningococcal ACWY program.
Early this month, WAtoday revealed more parents were rushing to vaccinate their children against unsubsidised meningococcal vaccines following a spike in babies infected with the potentially deadly disease in recent weeks.