Detailed text transcripts for TV channel - BBCNEWS - 20210621:17:09:00
Antibody levels in the trial volunteers, some of whom got their first covid jab over a year ago, will give vital clues. third booster doses might be needed only by certain groups such as the over 655, at immunity levels often decline faster as people age. second, which booster vaccines will be used? uk trial is comparing seven different covid vaccines and examining whether getting a different third jab from your first two doses might provide extra protection. we your first two doses might provide extra protection.— your first two doses might provide extra protection. we are hoping to have th...
Source: archive.org