The BA.2 sub-lineage appears to be more contagious than the original Omicron variant and is harder to detect in a PCR test, experts say.
Canada has detected BA.2 cases. What we know about this Omicron subvariant
The BA.2 sub-lineage appears to be more contagious than the original Omicron variant and is harder to detect in a PCR test, experts say.