Parasitic Diseases and Public Health
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Questions and Answers

What is the estimated number of people infected with hookworms worldwide?

  • 1.5 billion
  • 1.3 billion (correct)
  • 657 million
  • 1 billion

What is the characteristic of an infestation?

  • Constant number of pathogens (correct)
  • No growth of the pathogen
  • Variable number of pathogens
  • Replication of the pathogen

What is the common term used to refer to a variety of parasitic worms?

  • Fungi
  • Metazoans
  • Helminths (correct)
  • Protozoa

What is a factor that influences the severity of disease?

<p>Infection dose (A)</p> Signup and view all the answers

What is the estimated number of people infected with Ascaris worldwide?

<p>1.5 billion (B)</p> Signup and view all the answers

Which protozoan is transmitted by the ingestion of oocysts from cat faeces?

<p>Toxoplasma gondii (C)</p> Signup and view all the answers

What is the vector responsible for transmitting Trypanosoma in Africa?

<p>Tsetse fly (C)</p> Signup and view all the answers

How many species of Plasmodium infect humans?

<p>4 (A)</p> Signup and view all the answers

What is the disease caused by Trypanosoma in South America?

<p>Chagas disease (A)</p> Signup and view all the answers

What stain is used to stain Trophozoites of E.histolytica?

<p>Trichrome (C)</p> Signup and view all the answers

Which protozoan is transmitted by sand flies?

<p>Leishmania (C)</p> Signup and view all the answers

What is the characteristic shape of nematodes?

<p>Vermiform or cylindrical (A)</p> Signup and view all the answers

Which of the following parasites is typically found in the upper intestine of humans?

<p>Fasciolopsis buski (B)</p> Signup and view all the answers

What system is lacking in nematodes?

<p>Circulatory and respiratory systems (C)</p> Signup and view all the answers

What is the result of Fasciola hepatica infection in humans?

<p>All of the above (D)</p> Signup and view all the answers

How are nematodes typically transmitted?

<p>Through the faecal-oral route (C)</p> Signup and view all the answers

How do humans typically acquire Paragonimus westermani infection?

<p>By eating raw or pickled crustaceans (B)</p> Signup and view all the answers

What is the primary cause of anaemia in the tropics according to the text?

<p>Ancylostoma and Necator (A)</p> Signup and view all the answers

Which of the following parasites is not a type of liver fluke?

<p>Fasciolopsis buski (A)</p> Signup and view all the answers

In which climate is Enterobius more prevalent?

<p>Cold and temperate (A)</p> Signup and view all the answers

What is the condition in which Strongyloides infection is more severe?

<p>Immunosuppressed people (B)</p> Signup and view all the answers

In which part of the body do adult Fasciola hepatica trematodes live?

<p>Intra-hepatic bile ducts of the liver (D)</p> Signup and view all the answers

Which of the following is a common parasite of humans and pigs in South-east Asia?

<p>Fasciolopsis buski (C)</p> Signup and view all the answers

What is a characteristic feature of platyhelminths?

<p>Bilateral symmetry (B)</p> Signup and view all the answers

Which of the following is an example of a leaf-like platyhelminth?

<p>Fasciola (D)</p> Signup and view all the answers

What is the common mode of transmission for Taenia saginata and Taenia solium?

<p>Contaminated food (B)</p> Signup and view all the answers

What is a potential complication of Taenia solium infection?

<p>Cysticercosis (B)</p> Signup and view all the answers

What is the disease caused by the larval stages of Echinococcus granulosus and Echinococcus multilocularis?

<p>Hydatid disease (A)</p> Signup and view all the answers

What is the purpose of the Giemsa stain in the context of helminths?

<p>To visualize amastigotes in tissue scrapings (C)</p> Signup and view all the answers

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