Moura JRA, Bezerra RA, Oriá MOB, Vieira NFC, Fialho AV de M, Pinheiro AKB. Epidemiology of gestational syphilis in a Brazilian state: analysis in the light of the social-ecological theory. Rev. Esc. Enferm. USP. 2021;55:e20200271. doi:10.1590/1980-220X-REEUSP-2020-0271