A previous study showed that only 2/13 sera from human cases with a confirmed diagnosis of cysticercosis reacted to the GP50 band alone on EITB (false-positive rate of 84.6%) [42], whereas in a study of pigs experimentally infected with T. hydatigena, the presence of the GP50 band alone indicated cross reactivity against T. hydatigena metacestode antigens [28], highlighting the limited specificity of the GP50 band alone in rural pigs (which may be exposed to a higher number of parasites). This evidence concerns the gene ERVW-1 and cysticercosis.