New COVID variant explodes across Australia and only 1 in 10 are ready for the new wave, doctors urge vaccination, and how to stay safe

A new COVID-19 variant, NB.1.8.1, is rapidly spreading across Australia. This subvariant, a descendant of Omicron, has been detected in multiple states, including Victoria, New South Wales, Western Australia, and Queensland.

The World Health Organization (WHO) has designated NB.1.8.1 as a "variant under monitoring" due to its increasing global prevalence and potential to evade immunity from previous infections or vaccinations. In Australia, genomic sequencing indicates that NB.1.8.1 accounts for over 40% of cases in Victoria and is now the dominant strain in wastewater samples collected in Perth.

NB.1.8.1 is believed to be more transmissible than earlier strains. Research suggests it may infect cells more efficiently and partially sidestep existing immunity. Common symptoms include sore throat, fatigue, fever, mild cough, muscle aches, and nasal congestion. Gastrointestinal symptoms may also occur in some cases.


Despite its increased transmissibility, no current evidence exists that NB.1.8.1 causes more severe illness than previous variants. However, the rise in cases has led to increased hospitalizations, particularly among vulnerable populations.

How to get vaccinated

Health experts encourage the public to understand the importance of booster vaccinations to protect against severe disease. Federal Health Minister Mark Butler has strongly encouraged Australians to get their COVID-19 booster, especially as winter approaches. Current vaccines, including the most recent booster targeting the JN.1 variant, are expected to offer protection against NB.1.8.1.

These are the steps to get vaccinated:

• Check your eligibility on your state health website (e.g., Services Australia, WA Health)
  
  
  
• Book an appointment through your local GP, pharmacy, or vaccination hub
  
  
  
• It’s free for most eligible Australians
  

Booster uptake in Australia remains low, with just over 6% of Australians receiving a booster in the past six months. Health authorities stress that COVID-19, flu, and RSV vaccinations are free and safe to receive together, urging immediate action to prevent a healthcare crisis during the winter season.

How to stay safe this winter

In addition to vaccination, residents are encouraged to practice good hygiene, stay home when ill, and monitor public health updates.

Alongside vaccination, experts recommend:

• Wearing masks in crowded indoor spaces
  
  
  
• Improving ventilation at home and work
  
  
  
• Washing hands frequently
  
  
  
• Staying home if you feel unwell
  
  
  
• Testing for COVID if symptoms appear
  

These measures are crucial in mitigating the spread of NB.1.8.1 and protecting the community, particularly those at higher risk.