Many infectious disease experts have been increasingly worried about the new Omicron subvariant XBB.1.5.
Described as "highly contagious," the variant has rapidly spread across the United States with a very small number of cases emerging here in Australia.
Maria Van Kerkhove, the World Health Organization's (WHO) COVID-19 technical lead, has described it as "the most transmissible subvariant that has been detected yet". Although, there isn't enough data to know how severe its impact will be.
