haxxiy on 26 February 2022
Mmm. Looking now at the huge peaks in South Korea, Japan, Hong Kong, etc. brings to mind some of the 'immunological dark matter' theories: that an undetected, perhaps now extinct, human coronavirus closely related to SARS-CoV-2 might have circulated for years in the Pacific region at low levels, allowing the build-up of cross-immunity before the pandemic. And since Omicron is not only serologically distinct from the previous variants, but also other sarbecoviruses, it's the first variant to break through this 'dark matter' immunity in the region.
