Certain features of Omicron suggest it could have a major impact on the course of the #COVID19 pandemic. Even though we still need answers to some crucial questions, we are not defenceless against it. Don't wait until your hospitals start to fill up, it'll be too late. Act now. pic.twitter.com/lwFe5ukvyy

— Tedros Adhanom Ghebreyesus (@DrTedros) December 9, 2021