CALEFFO, Tatiane et al. Occurrence of Lawsonia intracellularis in horses raised in three regions of the state of Paraná, Brazil. Semina: Ciências Agrárias, [S. l.], v. 42, n. 5, p. 2867–2876, 2021. DOI: 10.5433/1679-0359.2021v42n5p2867. Disponível em: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/42801. Acesso em: 18 feb. 2026.