66 percent of COVID Omicron patients in Ontario hospitals are vaccinated
https://covid-19.ontario.ca/data

92% in Ontario are vaccinated

See also VitaminDWiki
COVID-19 cases vs. vaccination (counties and countries) - Sept 2021
Most of the World’s Vaccines Likely Won’t Prevent Infection From Omicron - NYT Dec 19, 2021
Vermont COVID death rates: vaccinated 2X higher than unvaccinated - Dec 2021
Vaccinated have HIGHER infection rates than unvaxxed (UK age 30-70) - Dec 9, 2021