Читать книгу Practical Guide to Diagnostic Parasitology - Lynne Shore Garcia - Страница 65

Trematodes are flatworms and are exclusively parasitic. With the exception of the schistosomes (blood flukes), flukes are hermaphroditic. They may be flattened, and most have oral and ventral suckers. All of the intestinal trematodes require a freshwater snail to serve as an intermediate host; these infections are foodborne (freshwater fish, mollusks, or plants) and are emerging as a major public health problem (more than 40 million people are infected with intestinal and liver/lung trematodes). Specific examples include Fasciolopsis buski, Heterophyes heterophyes, and Metagonimus yokogawai.