However, as the anti-nucleocapsid IgG levels were not seen to be significantly elevated in this group as compared to the ChAd recipients who completed their day 28 visit much before the start of the Omicron wave in India, the impact of the Omicron wave may not be significant on immune responses in Group 3.
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Characterization of immune responses to two and three doses of the adenoviral vectored vaccine ChAdOx1 nCov-19 and the whole virion inactivated vaccine BBV152 in a mix-and-match study in India.
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