Page 139 - parasitology for medical and clinical laboratoryprofessionals

CHAPTER

5

Epidemiology of

Nematodes, Cestodes,

and Trematodes

LEARNING OBJECTIVES

Upon completion of this chapter, the learner will be expected to:

■ Describe in general terms the three classes of “worms” in the field of parasitology
■ Relate the impact of hookworm infections on young children
■ Describe the disease called bilharziasis and its origins
■ Discuss the most common “worm” infection of children, with genus and species of organism
■ Provide basic symptoms of a young child with an E. vermicularis infection

KEY TERMS

Anemia Flukes Mollusks
Arteriolitis Fork-tailed cercariae Perianal
Ascites Granulomatous lesions Periportal
Bilharziasis Gravid proglottids Platyhelminthes
Blood flukes Ground itch Progressive pernicious anemia
Cartilaginous Helminthiases Rhabditiform larva
Cercaria Hematuria Scolex
Cerebral cysticercosis Hepatomegaly Splenomegaly
Cestodes Human hydatid disease Swimmer’s itch
Chlorosis IgE Teniasis
Cysticercosis Lung fluke Tetrachloroethylene
Dioecious Lymphadenopathy Thymol
Dysentery Mesenteric veins Tissue flukes
Embryonated eggs Metacercariae Urethral occlusion
Epsom salts Miracidia

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