Pfizer vaccine has only 12% efficacy against omicron for children.

https://www.cnbc.com/2022/02/28/pfizer-covid-vaccine-was-just-12percent-effective-against-omicron-in-kids-5-to-11-study-finds.html

Look like omicron will spread among children as the Pfizer vaccine has only 12% efficacy.  Sigh!