Health

Should we be worried about the Stratus and Nimbus Covid-19 variants?

By Lois McCarthy

Copyright walesonline

Should we be worried about the Stratus and Nimbus Covid-19 variants?

As temperatures drop and autumn sets in, the UK is experiencing a noticeable rise in respiratory illnesses, including colds, flu and Covid-19 . In response, the UK Government has issued guidance, reassuring the public that while caution is advised, there is no need for alarm. Recent figures show a significant increase in confirmed Covid-19 cases, rising from 7.6% to 8.4% in just one week. Two variants – Stratus and Nimbus – are currently circulating. Both are considered highly contagious, though they appear to cause slightly different symptoms. To read more about the variants and their symptoms, click here. It is understood that out of the two variants, Stratus is currently the most prevalent strain across the UK, as in accordance with the World Health Organisation’s (WHO) report from late September 2025. Stay informed on the latest health news by signing up to our newsletter here Despite the rise in cases, health officials emphasise that there is no evidence that these variants lead to more severe illnesses compared to those previously in circulation. They further stressed that it’s normal for viruses to mutate over time and that new data will help build a clearer understanding of how these variants interact with our immune systems. This in turn, the government says, will guide them in how to “optimise our protection” as well as, “actions we can take to keep the most vulnerable safe and live our lives as normally as possible”. They further added: “The most important thing is for those eligible to get their vaccination when it is due.” Read here to learn who is eligible for a Covid jab in Wales. In light of this, it is recommended that individuals with respiratory illnesses who have tested positive for Covid-19 remain at home whenever possible and avoid contact with those considered vulnerable. Current guidance remains largely consistent with that issued during previous outbreaks. The government-approved guidance for those experiencing symptoms is as follows: For further information on the new strains and how they are monitored, click here.