RT Journal Article T1 Protist enteroparasites in wild boar (Sus scrofa ferus) and black Iberian pig (Sus scrofa domesticus) in southern Spain: a protective effect on hepatitis E acquisition? A1 Rivero-Juarez, Antonio A1 Dashti, Alejandro A1 Lopez-Lopez, Pedro A1 Muadica, Aly Salimo A1 Risalde, Maria de Los Angeles A1 Köster, Pamela C A1 Machuca, Isabel A1 Bailo, Begoña A1 de Mingo, Marta Hernandez A1 Dacal, Elena A1 Garcia-Bocanegra, Ignacio A1 Saugar, Jose M A1 Calero-Bernal, Rafael A1 Gonzalez-Barrio, David A1 Rivero, Antonio A1 Briz, Veronica A1 Carmena, David K1 Blastocystis K1 Co-infection K1 Cryptosporidium K1 Enteric parasites K1 Giardia K1 Hepatitis E virus K1 Pigs K1 Spain K1 Strongyloides K1 Transmission K1 Wild boars AB Several studies have independently evaluated the occurrence of hepatitis E virus (HEV) and enteroparasites in swine, but no surveys have been conducted to jointly assess the prevalence and genetic diversity of enteroparasites in pigs and wild boars, their sympatric transmission between hosts, and their potential interaction with HEV. We prospectively collected serum and faecal samples from black Iberian domestic pigs and wild boars from southern Spain between 2015‒2016. We evaluated for HEV in serum and faeces, and for the presence of enteroparasites (Giardia duodenalis, Cryptosporidium spp., Blastocystis sp., Neobalantidium coli and Strongyloides spp.) in the same faecal samples. The prevalence of each intestinal parasite species was calculated. A total of 328 animals (56.7% black Iberian pigs and 43.3% wild boars) were included in the study. The overall global prevalence of HEV in serum was 16.8%. The overall global prevalence of each enteroparasite species was 19.5% for G. duodenalis, 8.2% for Cryptosporidium spp., 41.8% for Blastocystis sp., 31.4% for N. coli, and 8.8% for Strongyloides spp. HEV-infected animals showed a significantly lower prevalence of G. duodenalis (3.2 vs 20%; P = 0.002) and Blastocystis sp. (38.7 vs 80%; P  Our study found a high prevalence of enteroparasites in black Iberian pigs and wild boars in southern Spain, suggesting a sympatric co-transmission of some of the species investigated. It is suggested that extracellular G. duodenalis and Blastocystis sp. might have a protective effect on HEV acquisition in swine. PB BioMed Central YR 2020 FD 2020-05-28 LK http://hdl.handle.net/10668/15674 UL http://hdl.handle.net/10668/15674 LA en NO Rivero-Juarez A, Dashti A, López-López P, Muadica AS, Risalde MLA, Köster PC, et al. Protist enteroparasites in wild boar (Sus scrofa ferus) and black Iberian pig (Sus scrofa domesticus) in southern Spain: a protective effect on hepatitis E acquisition? Parasit Vectors. 2020 Jun 3;13(1):281 DS RISalud RD Apr 8, 2025