Dr.Tedros Adhanom Ghebreyesus, Director General of the World Health Organization: "There is new evidence emerging now of its [booster vaccine] benefits, especially with elderly groups, senior citizens, especially above 65 and above 60. So if it's going to be used, it's better to focus on those groups who have risk of severe disease and deaths rather than, as we see, some countries are using to give boosters to children, which is not right.
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