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WorldPosted at: Dec 25 2021 1:01AM


Two doses of Pfizer or Moderna fail to protect against Omicron after 6 months: Scientists

Washington, Dec 24 (UNI/Sputnik) A study by a group of scientists from the United States has found that two doses of Covid 19 vaccines from Pfizer or Moderna do not provide protection against the Omicron strain six months after the second vaccination.
The study is published on the bioRxiv portal of scientific research and has yet to be reviewed by peers.
"Following the 2nd dose, we observed a 30-fold reduction in neutralizing activity against the omicron variant. Through six months after the 2nd dose, none of the sera from naive vaccinated subjects showed neutralizing activity against the Omicron variant," the abstract read.
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