The XFG variant, dubbed "American Covid" and also known as Stratus, has become the dominant strain in the UK, accounting for over half of positive tests in September. Public health officials have issued updated guidance advising adults to isolate for five days upon testing positive.
The variant is notable for its unique symptom of hoarseness, which distinguishes it from earlier strains of the virus. NHS guidelines now emphasize this symptom as a key identifier. The strain, which originated in the US, has spread rapidly across the UK, raising concerns about its potential for wider transmission.
This surge in XFG cases follows a pattern similar to its spread in the United States, where it was first identified. Health authorities are monitoring its impact on hospital capacity and public health measures. The variant's increased prevalence has prompted calls for further research into its characteristics and transmission dynamics.
