Tweet from florian_krammer at December 10, 2021 at 10:16PM

1) I am very worried about Omicron and inactivated vaccines. According to early data from the UK, 2x AstraZeneca or 2x Pfizer provides little protection from symptomatic disease. VE with inactivated vaccines is generally lower (as shown e.g. in Brazil: https://t.co/jnUPjRNETk)

— Florian Krammer (@florian_krammer)
Dec 11, 2021

from http://twitter.com/florian_krammer