The study is in tandem with preliminary studies showing that several clinically used antibodies lose neutralising activity against Omicron's spike-expressing recombinant lentiviral or vesicular stomatitis virus (VSV)-based pseudoviruses, the researchers said.
Treatment with the therapy, which is a combination of two monoclonal antibodies -- Casirivimab and Imdevimab -- was touted as a game changer with its better hold on the deadly Covid pandemic by Indian hospitals.
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