BBCNEWS BBC News August 25, 2021 09:26:00
Should be looking out for, as a danger period for protection weaning significantly? it is danger period for protection weaning sianificantl ? , . significantly? it is a difficult question- — significantly? it is a difficult question. we _ significantly? it is a difficult question. we have - significantly? it is a difficult i question. we have experience significantly? it is a difficult - question. we have experience with other vaccines and other infections. we have concerns about this virus and the winter, the potential seasonality, that affects timing, and there are massive logistical quest...