[名词解释] 生物源性蠕虫(biohelminth)

迁延移行(Persisting migrans) 伴随免疫(concomitant immunity) 带虫免疫(Premunition) 土源性蠕虫(geohelminth) 带虫者(carrier) 生物源性蠕虫(biohelminth)