Posted in Article New Omicron strain, first detected in UK, appears to be more transmissible than previous strains of Covid-19: WHO 2022-04-04 Leave a Comment on New Omicron strain, first detected in UK, appears to be more transmissible than previous strains of Covid-19: WHO The Geneva-based UN health agency said that XE belongs to the Omicron variant until significant differences in transmission and disease characteristics, including severity, may be reported. Source: New Omicron strain, first detected in UK, appears to be more transmissible than previous strains of Covid-19: WHO