A new variant of the Covid-19 virus, known as Eris or EG.5.1, has emerged and is causing concern in the UK, where it has become the secondmost prevalent variant. This new subvariant of the Omicron lineage was initially identified on July 31. Subsequently, it has been responsible for approximately one in 10 Covid-19 cases in the UK. The World Health Organization (WHO) has issued a warning regarding the increasing cases of the Eris variant. However, this variant does not appear to be more severe than previous variants.