Omicron is more transmissible. Less pathogenic. It evades immune responses from vaccines, and previous delta infections. But: it creates an immune response that seems to protect against delta, and possibly future variants.
Looks like the spec sheet of a miracle ... and now we find it was optimized through (accelerated?) selection in mice?
This study only looked at seropositives, either vaccine or natural immunity. That exposure to covid or even its spike (ie vaccine) increases cross reactivity protection isn’t new (this is why we are still using WT based vaccines for revaccination).
I still haven’t seen any study on naive omicron infected cross reactivity to other variants, specially over the RBD.
Omicron is more transmissible. Less pathogenic. It evades immune responses from vaccines, and previous delta infections. But: it creates an immune response that seems to protect against delta, and possibly future variants.
Looks like the spec sheet of a miracle ... and now we find it was optimized through (accelerated?) selection in mice?