The World Health Organisation (WHO) has urged vigilance on a newly emerged COVID-19 variant, officially labelled as XFG and informally referred to as 'Stratus', which has now been identified in at least 38 countries, sparking renewed attention from public health officials.
According to the WHO, 'Stratus' accounted for 22.7 per cent of sequenced global cases in the week ending 22 June, rising sharply from just 7.4 per cent four weeks earlier—a jump that underscores its rapid global transmission.
