Researchers in Japan say an antibody produced by infection with the Omicron subvariant BA.5 is less effective against a newer subvariant, BA.2.75.
Professor Sato Kei of the Institute of Medical Science at the University of Tokyo heads the team of researchers, G2P-Japan. The findings of their study have not been formally peer-reviewed.
The team used the blood of BA.5-infected hamsters to examine how the antibody works against the BA.2.75 subvariant.
The researchers say the BA.5 antibody only had about one-12th of its potency when it was applied to the new subvariant.
Sato noted that the BA.5 antibody may be less potent against the BA.2.75 subvariant.
He added that if BA.2.75 continues to replace the prevalent BA.5 subvariant, the spread of infections may not be sufficiently curbed.
Professor Sato Kei of the Institute of Medical Science at the University of Tokyo heads the team of researchers, G2P-Japan. The findings of their study have not been formally peer-reviewed.
The team used the blood of BA.5-infected hamsters to examine how the antibody works against the BA.2.75 subvariant.
The researchers say the BA.5 antibody only had about one-12th of its potency when it was applied to the new subvariant.
Sato noted that the BA.5 antibody may be less potent against the BA.2.75 subvariant.
He added that if BA.2.75 continues to replace the prevalent BA.5 subvariant, the spread of infections may not be sufficiently curbed.
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Summary
Researchers led by Professor Sato Kei at G2P-Japan, University of Tokyo, find that an antibody produced by Omicron subvariant BA.5 infection is less effective against a new subvariant, BA.2.75. Their unpublished study uses blood from BA.5-infected hamsters to test the antibody's efficacy against
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ID: 62f8e9f8-8f64-4417-8de7-75f0c0a80b98
Category ID: nhk
URL: https://www3.nhk.or.jp/nhkworld/en/news/20220814_04/
Date: Aug. 14, 2022
Created: 2022/08/14 21:26
Updated: 2025/12/09 14:20
Last Read: 2022/08/14 21:26