NEW – Canada: New data from Ontario suggests a 3rd mRNA dose (“booster”) has a “vaccine effectiveness” of only 37% for Omicron.
In 2020, the FDA said they would not accept vaccine efficacy less than 50%. Yet the FDA and CDC advising a “booster” for Omicron.
https://www.medrxiv.org/content/10.1101/2021.12.30.21268565v1