At least 70 species of foodborne intestinal trematodes are
known to occur as human infections around the world [1]. In
the Republic of Korea, about 20 species are known, which consist
of species belonging to the family Heterophyidae (=heterophyids),
Echinostomatidae, Gymnophallidae (=gymnophallids),
Plagiorchiidae, and Neodiplostomidae [2]. Among
them, the heterophyid and gymnophallid flukes are minute in
their body size, so they are often called as minute intestinal
flukes (MIF) [3]. Their eggs are also minute and morphologically
close to one another, and it is practically difficult to differentiate
the species when they are discharged in the human
feces unless they are apparently smaller or larger than others
or extremely unique in shape
At least 70 species of foodborne intestinal trematodes areknown to occur as human infections around the world [1]. Inthe Republic of Korea, about 20 species are known, which consistof species belonging to the family Heterophyidae (=heterophyids),Echinostomatidae, Gymnophallidae (=gymnophallids),Plagiorchiidae, and Neodiplostomidae [2]. Amongthem, the heterophyid and gymnophallid flukes are minute intheir body size, so they are often called as minute intestinalflukes (MIF) [3]. Their eggs are also minute and morphologicallyclose to one another, and it is practically difficult to differentiatethe species when they are discharged in the humanfeces unless they are apparently smaller or larger than othersor extremely unique in shape
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