A ninth person has died from the freak thunderstorm asthma event in Melbourne last year.
The Department of Health on Wednesday released a statement advising a ninth person died as a result of the November 21 incident.
All other patients have since been discharged from hospitals.
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What is thunderstorm asthma.
University of Western Australia's Nobel Laureate, Professor Barry Marshall, explains thunderstorm asthma.
Fairfax Media understands the person died in recent days.
The rare explosion of pollen caused breathing difficulties for thousands of Victorians, including hundreds of children.
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Preliminary findings of a review ordered by the Victorian government into the disaster are expected to be released before the end of the month.
Dozens of experts were studying the outbreak, which stretched the state's ambulance service and hospitals, including some which deviated from health emergency response plans.
"The pollen season is now over in Victoria for this season and we do not expect to see thunderstorm activity triggering asthma or similar respiratory problems," a Health Department spokesman said in a statement.
"However, asthmatics should continue to take medication as usual, to seek help as required from their GP or a health professional.
"In the case of an acute asthma attack, as always, an ambulance may be needed."
More to come