Germany's health minister has expressed concern over a new COVID-19 subvariant linked to growing hospitalisations in the northeastern United States, adding that Berlin was watching the situation closely.
As much of the world looks to rising COVID cases in China, infectious disease experts have also been increasingly worried about the highly contagious Omicron XBB.1.5, which made up more than 40% of U.S. cases, official data showed last week.
