A new COVID-19 variant, NB.1.8.1, was spreading across Australia in mid-2025. Experts urged eligible people to get a booster.
Key Facts
- Variant: NB.1.8.1, nicknamed Nimbus
- ABC reported it was “pretty much everywhere” in Australia
- Adults 75+: booster every six months
- Adults 65–74: booster every 12 months
Booster Advice
Australia’s immunisation advisory group, ATAGI, recommends boosters every six months for adults 75 and over. It recommends every 12 months for adults 65 to 74, and for adults 18 to 64 with severe immune problems.
Other adults 18 to 64 can get one every 12 months.
Frequently Asked Questions
What is NB.1.8.1?
A COVID-19 variant, also called Nimbus.
Who should get a booster?
ATAGI recommends regular boosters for adults 65 and over.
How often for over-75s?
Every six months.
Conclusion
Talk to your doctor or pharmacist about your booster.
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