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</p> Signup and view all the answers

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

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

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

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

    What is the vector responsible for transmitting Trypanosoma in Africa?

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

    How many species of Plasmodium infect humans?

    <p>4</p> Signup and view all the answers

    What is the disease caused by Trypanosoma in South America?

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

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

    <p>Trichrome</p> Signup and view all the answers

    Which protozoan is transmitted by sand flies?

    <p>Leishmania</p> Signup and view all the answers

    What is the characteristic shape of nematodes?

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

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

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

    What system is lacking in nematodes?

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

    What is the result of Fasciola hepatica infection in humans?

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

    How are nematodes typically transmitted?

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

    How do humans typically acquire Paragonimus westermani infection?

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

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

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

    In which climate is Enterobius more prevalent?

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

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

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

    What is a characteristic feature of platyhelminths?

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

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

    <p>Fasciola</p> Signup and view all the answers

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

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

    What is a potential complication of Taenia solium infection?

    <p>Cysticercosis</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</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</p> Signup and view all the answers

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