Figure 2. Forest Plots Showing the Odds Ratio (OR) of Efficacy Outcomes Following the Second Dose of Messenger RNA (mRNA) Vaccine.
Two-dose mRNA COVID-19 vaccination was associated with lower risks of SARS-CoV-2 infections with or without symptoms, symptomatic SARS-CoV-2 infections, hospitalizations due to COVID-19–related illnesses, and multisystem inflammatory syndrome in children. ORs were calculated using random-effects model. IV indicates inverse variance.