BBCNEWS Outside Source November 29, 2021 19:05:00
They'll also be considering its impact on the effectiveness of vaccines. here's our medical editor fergus walsh. afteralpha, beta, gamma, delta comes omicron, which scientists think could be the worst variant yet. so, is omicron more transmissible? it appears to be driving a rise in infections in south africa, but it's too early to be certain what's happening, as cases only started increasing ten days ago from a very low level. the world health organization said omicron shows why the world needs a new global agreement on how to prevent, prepare and respond to pandemics. we should all be wide a...