As colder months settle in, Australia is facing a sharp rise in COVID-19 infections. The main driver is a new variant called NB.1.8.1, now circulating widely in Victoria, South Australia and Western Australia. Although this strain is a sublineage of Omicron, it has quickly become dominant in some regions and raised questions about vaccines, symptoms and prevention.
Here’s what’s happening and how to protect yourself effectively using trusted techniques and products.
Understanding NB.1.8.1
NB.1.8.1 has several mutations that make it more efficient at attaching to human cells. As a result, it spreads faster than earlier Omicron variants, even among previously infected or vaccinated individuals.
Recent wastewater surveillance has confirmed that NB.1.8.1 is now the dominant COVID-19 variant in Perth, Western Australia. This finding aligns with genomic sequencing data showing that NB.1.8.1 accounts for over 40% of sequenced cases in Victoria and approximately 25% in New South Wales and Western Australia.
Most people who catch it report mild illness, but because of its transmissibility, even small pockets of infection can grow quickly if ignored.
Common Symptoms Associated with NB.1.8.1
Like other recent variants, NB.1.8.1 primarily affects the upper respiratory tract. Symptoms can vary but most commonly include:
- Sore or scratchy throat
- Mild fever and chills
- Headaches and fatigue
- Nasal congestion
- Aches and nausea
These symptoms may be mistaken for a cold or flu, especially at the start. That makes rapid testing and isolation crucial to limit community spread.
What Happens If You Get Infected with NB.1.8.1 Variant
People with healthy immune systems tend to recover within a few days. However, vulnerable groups such as the elderly or those with chronic illness can still experience complications.
If you feel unwell:
- Stay home and avoid contact with others
- Use a rapid antigen test
- Notify your employer or school if required
- Contact a healthcare provider if symptoms worsen or persist
Even if symptoms are mild, self-isolation helps protect those at higher risk and eases pressure on the health system.
The Role of Booster Vaccines Against the NB.1.8.1 Variant
While NB.1.8.1 is not specifically targeted by current vaccines, studies show that boosters tailored to the JN.1 lineage still offer valuable protection, especially against severe illness. Australian health experts are recommending boosters for people aged 65 and over, those with chronic conditions, and other high-risk groups.
For personalised advice, check guidance from the Department of Health.
NB.1.8.1 Variant Prevention Strategies
Disclaimer: This article offers general information and is not a substitute for professional medical advice. Please consult your healthcare provider regarding vaccination and treatment options.
Every day habits and hygiene choices make a big difference. Livingstone International offers a wide range of infection control products to help Australians stay safe and well prepared this winter.
Face Masks
Wearing a high-quality face mask helps block airborne particles, especially in busy indoor settings. Livingstone supplies a broad selection, including P2 respirators, Level 3 surgical masks and antimicrobial options that meet or exceed TGA and international standards.
KOVIT Disinfectants
Maintaining surface hygiene is a fundamental part of infection control, especially in high-contact and shared environments. Livingstone’s KOVIT range includes hospital-grade disinfectant sprays and bottles, formulated to eliminate 99.9% of pathogens on contact.
Hand Sanitisers
Hand hygiene remains essential. Whether you prefer the rapid action of alcohol-based sanitiser or a gentler alcohol-free sanitiser, Livingstone’s range ensures there is a solution for every environment. These products are fast-drying and non-irritating, making them suitable for repeated daily use.
You can explore our cleaning and hygiene range for products that support safer workplaces, homes and healthcare environments.
New COVID variants are likely to emerge over time. What matters is how we respond. By staying informed and practising consistent prevention, Australians can reduce the impact of seasonal waves.
Livingstone remains committed to helping our customers protect what matters most: health, community and peace of mind.
References
- Department of Health and Aged Care. (2025). COVID-19 vaccines – getting your vaccination. Australian Government. Available at: https://www.health.gov.au/our-work/covid-19-vaccines/getting-your-vaccination (Accessed: 6 June 2025).
- SBS News. (2025) A new COVID-19 variant is driving up infections in Australia: Here’s what to know about NB.1.8.1. Available at: https://www.sbs.com.au/news/article/a-new-covid-variant-is-driving-up-infections-in-australia-heres-what-to-know-about-nb-1-8-1/tr67z8yql (Accessed: 6 June 2025).
- Herrero, L. (2025, May 28). There’s a new COVID variant driving up infections. Available at: https://medicalxpress.com/news/2025-05-covid-variant-infections-virologist-nb181.html (Accessed: 6 June 2025).
- Colitco. (2025, May 30). New COVID Variant NB.1.8.1 Spreads Across Australia. Available at: https://colitco.com/new-covid-variant-australia-nb181-winter-surge/ (Accessed: 6 June 2025)