Xi’an shuts back down as China finds first cases of new Omicron subvariant
The city recorded 18 Covid infections from Saturday to Monday, all of which are of the Omicron BA.5.2 subvariant, according to local disease control officials. BA.5.2 is a sub-lineage of BA.5, which is already dominant in the US and appears to escape antibody responses among both people previously infected with Covid-19 and those who have … Read more