An adult is recovering after they were hospitalised with the life-threatening meningococcal serogroup B disease.

WA Health confirmed it was the 11th case reported in the state this year, following 13 cases and one death in 2024.

Authorities said the deadly disease was caused by a bacterial infection of the blood, or membranes that line the spinal cord and brain, and occasionally the throat, lungs or large joints.

A WA Health spokesman said meningococcal bacteria were not easily spread from person-to-person.

“The bacterium is present in droplets discharged from the nose and throat when coughing or sneezing but is not spread by saliva and does not survive more than a few seconds in the environment,” a spokesman said.

“Meningococcal bacteria are carried harmlessly in the back of the nose

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