
Two strains of Omicron have been labelled “variants of concern” that could dominate this summer, health officials warned.
The European Centre for Disease Prevention and Control (ECDC) said in a report that variants BA.4 and BA.5 could lead to soaring Covid cases across the continent risking additional pressures on hospitals and ICU departments in a matter of weeks and months. It added that countries should remain vigilant for signs that new variants are emerging.