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Meta-analysis of serologic response compared with controls after (A) 1 dose of after (B) 2 doses of mRNA vaccine. after (C) 2 doses of AZD1222 vaccine, after (D) 2 doses of CoronaVac vaccine and after (E) 2 doses of BBV152 vaccine. The size of the solid squares denotes the mean difference, and the horizontal lines represent the 95% CIs. The diamond denotes the weighted mean difference, and the lateral tips of the diamond indicate the associated CIs.
