UK health officials are officially monitoring a new Covid-19 strain, nicknamed “stealth Omicron ”, that appears to be more contagious than the original Omicron strain.
Early data suggests that BA.2, a sub-variant believed to have emerged from a mutation of the Omicron coronavirus variant, may be both more transmissible and better able to evade vaccines than the more common BA.1 sub-lineage.
Currently the BA.1 lineage accounts for 98% of all cases globally but in Denmark, the BA.2 has grown rapidly.
