01:146:328 Lecture Notes - Lecture 14: Procercoid, Strobilation, Vaginitis
30 Nov 2016
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Infections prevalent in places where sewage drains into lakes and rivers, there are a variety of fish that can act as hosts. i) In a small number of cases, there is something called pernicious (megaloblastic) anemia: anemia happens when the blood lacks enough healthy. This means the cells in the body are not getting enough oxygen. Vitamin b12 is absorbed by the host intestine only if it is bound to if. ii) In cases of pernicious anemia, the worm secretes substances which block if from binding to the vitamin b12, meaning the host is unable to absorb vitamin b12. This means the human has become the ih because plerocercoid is not an adult. The genus spirometra does this: mode of infection, drinking water containing copepods infected with plerocercoids i) The procercoid will penetrate the human intestinal wall and develop into a plerocercoid in the tissues b) Ingesting uncooked animals containing plerocercoid (the metacestoid) i) ii)
