Explainer: What we know about the new COVID variant NB.1.8.1

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1 min read
Covid variant NB181

Another day, another COVID-19 variant making headlines. This time, it’s NB.1.8.1. The name might be a mouthful, but the facts about this latest strain are fairly straightforward.

Globally, the response has been cautious but measured. Health authorities have started intensifying genomic sequencing to track NB.1.8.1’s spread.

Here’s what you need to know, what experts are saying, and what it means for South Africa.

First, what is NB.1.8.1?

NB.1.8.1 is a newly identified variant of the SARS-CoV-2 virus (the virus behind COVID-19).

According to the World Health Organization’s (WHO) risk evaluation, NB.1.8.1 is being closely tracked due to a notable rise in cases in several countries, particularly Ireland, Germany, and Portugal.

It’s still Omicron, but a sub-lineage of XBB.1.5. That means it shares characteristics of Omicron’s rapid transmissibility.

The WHO categorises it as a “variant under monitoring,” not yet a variant of concern, but still something worth watching closely.

The NICD’s response in South Africa

South Africa’s National Institute for Communicable Diseases (NICD) says the country is monitoring the new variant closely but urges calm.

At the time of publishing, NB.1.8.1 has not been detected in South Africa, but the NICD will continue with routine genomic surveillance of SARS-CoV-2.

In other words, we’re watching. But for now, there’s no sign of NB.1.8.1 locally.

As per their latest statement, the NICD will inform the public “should any significant changes or risks emerge”.

What makes NB.1.8.1 different?

As outlined by the WHO, NB.1.8.1 carries a few mutations that could make it more transmissible than earlier Omicron variants.

While early reports suggest it may spread faster, there’s currently no evidence to show it causes more severe illness or significantly reduces vaccine effectiveness.

In short, it’s new enough to track, but not different enough (yet) to panic about.

Should we be worried?

Not necessarily, but vigilance is key. Variants emerge constantly; that’s just what viruses do.

What matters is how effectively health systems respond and how swiftly accurate information spreads to the public.

If you’re vaccinated, boosted, and still practising basic health precautions, experts say there’s no immediate cause for alarm.

What you can do now:

  • Stay informed from credible sources (WHO, NICD, local health authorities, etc).
  • Keep your vaccinations current; boosters remain highly effective.
  • Continue basic hygiene practices.

The takeaway:

NB.1.8.1 is yet another reminder COVID-19 isn’t finished with us yet.

But, with robust surveillance and clear communication, it’s a variant we can handle.

South Africa’s health authorities are on alert, and there’s no current indication we’re facing a repeat of past severe waves.

In other words: Stay aware, stay safe. But don’t panic.

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