The WHO said its expert group had assessed the limited data from seven studies for second booster doses of messenger RNA vaccines, saying there wasn't enough information proving their effectiveness in younger, healthy people.
from World News Headlines, Latest International News, World Breaking News - Times of India https://ift.tt/g8CbKlw
from World News Headlines, Latest International News, World Breaking News - Times of India https://ift.tt/g8CbKlw
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