Here's a good NYT Omicron article but probably paywalled

[Demsrule86]

6. I posted as much as is allowed and tried to post what I consider the most important information.

https://www.nytimes.com/2021/11/26/health/omicron-variant-vaccines.html

"...That overlap has Dr. Hatziioannou concerned that Omicron will be able to evade some of the antibodies that people have acquired either from vaccines or from Covid-19 infections. Some monoclonal antibody treatments won’t work against Omicron either, she predicted, because the variant’s spike protein is protected from them.

Still, vaccines are expected to provide some protection against Omicron because they stimulate not only antibodies but immune cells that can attack infected cells, Dr. Hatziioannou said. Mutations to the spike protein do not blunt that immune-cell response.

And booster shots could potentially broaden the range of antibodies people make, enabling them to fight against new variants like Omicron. “We will see, because these studies are only now ongoing,” she said.

For now, there’s no evidence that Omicron causes more severe disease than previous variants. And it’s also not clear yet how quickly Omicron can spread from person to person..."