Homologous equivalence study of immunogenicity after third dose of Covid-19 vaccine (recombinant) with an interval of six months after the second dose, comparing the interval of eight and 12 weeks between the first two doses. - Vianna CM; da Silva E Sá GR; Seid MVH; Camacho LAB; Xavier JR; da Gama VC; de Castro TDM; Dos Santos EAP; de Almeida CD; Cruz RLS; Siqueira M; Maia MLS; et al. (Memorias do Instituto Oswaldo Cruz, 2024)