PRELIMINARY DATA but good news for your afternoon! Pfizer vaccine’s is only SLIGHTLY less effective in preventing infection with Omicron than with Delta- 90% as opposed to 95%- while it is AS EFFECTIVE in preventing serious symptoms- around 93% – at least for those boosted!

— Chise 🧬🧫🦠💉🔜 MFF (@sailorrooscout) November 30, 2021