"South African Analysis Finds Vaccination Only 30% Effective Against Omicron"
"The analysis of South African COVID-19 patients infected with the Omicron variant stated that "the two-dose Pfizer-BioNTech vaccination provides 70% protection against severe complications of COVID-19 requiring hospitalisation, and 33% protection against COVID-19 infection, during the current Omicron wave."
https://www.ibtimes.com/south-african-analysis-finds-vaccination-only-30-effective-against-omicron-3357449
That's when fresh.