Effect of 2 Inactivated SARS-CoV-2 Vaccines on Symptomatic COVID-19 Infection in Adults
See eTable 1 in Supplement 2 for definitions of each analysis population. Among those receiving aluminum hydroxide (alum) for the first dose, 5 participants received WIV04 (n = 2) and HB02 (n = 3) vaccines for the second dose and were not included in the safety analysis population of the alum-only group (13 458 – 5 = 13 453), but were included in the WIV04 and HB02 groups, respectively. Three participants who received WIV04 for the first dose and HB02 for the second dose and 3 participants who received HB02 for the first dose and WIV04 for the second dose were included in both g...