Tweaked COVID-19 Vaccine Starts Phase II for GSK, Sanofi
BioSpace
FEBRUARY 21, 2021
The retooled COVID-19 vaccine promised by GlaxoSmithKline and vaccine giant Sanofi is entering Phase IIb testing, with new antigen dosages it hopes will boost the lackluster immune response seen in adults 50 and over during its last Phase I/II trial.
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