Buzz
A newly identified coronavirus strain, first detected in the UK, is suspected by researchers to be more transmissible compared to other widespread variants globally. But how significant is this development? The straightforward response: It’s still unclear.
Key Insights
On December 8, Science reports, researchers and health officials observed a map indicating a surge in cases in southeastern England. Genetic sequencing revealed that the virus spreading in this region had distinct mutations, setting it apart from other circulating strains.
There is growing concern that the recent surge in cases could be linked to this variant being more contagious than others. While this remains uncertain, several European nations have imposed travel restrictions to prevent the spread of the new variant.
Are mutations inherently harmful?
Not always. Viruses constantly undergo mutations, and the coronavirus follows this pattern. Researchers track the virus's spread by sequencing its genome. If two individuals with COVID have nearly identical virus strains, they likely contracted it from the same source. Conversely, different variants suggest separate origins. Explore a comprehensive global family tree of coronavirus mutations here.
In this context, mutations are a continuous process, but they haven’t yet altered the nature of the coronavirus or the necessary measures to combat it.
Is this particular mutation more severe than previous ones?
It’s still unclear. The newly identified variant, B.1.1.7, is under investigation to determine if it differs significantly from other coronavirus strains. There’s speculation it might spread more easily, but conclusive evidence is lacking, so further observation is needed.
Could this variant bypass the vaccine?
This remains uncertain. B.1.1.7 has 17 genetic mutations compared to closely related variants, with nearly half located in the spike protein—a cause for concern.
The recently introduced mRNA vaccines work by prompting our bodies to produce the spike protein, enabling our immune systems to recognize and combat future infections carrying the same protein.
In theory, alterations in the spike protein could potentially help the virus evade the vaccine. However, this depends on the extent of the changes and whether our immune systems can still identify it. Currently, there’s no definitive answer to this question.
If this variant proves to be more contagious, what measures can we take to curb its spread?
The new strain has been present in England since at least September 20, making it improbable that border closures will entirely prevent its spread. It’s likely the variant has already reached other nations. However, these restrictions could still help limit the influx of individuals carrying the new variant.
In the meantime, we must persist with our current strategies—managing a highly contagious coronavirus has always been the goal. Masks, social distancing, and improved ventilation remain crucial, especially if this variant becomes widespread; their importance would only increase.
It’s important to note that there’s no definitive proof the variant is less susceptible to vaccines or causes more severe illness. While it appears to spread more easily, this aspect hasn’t been thoroughly studied. Experts monitoring the UK variant are staying vigilant but believe there’s no need for alarm at this stage.
