Parasitic Infection in Tropical Areas
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Questions and Answers

Which large group of helminthic parasites includes roundworms?

  • Hookworms
  • Trematodes
  • Nematodes (correct)
  • Cestodes

    • What are the most important roundworms that parasitize the human intestine?

  • Ascaris, pinworm, whipworm, and hookworms (correct)
  • Tapeworm, flukes, and Trichinella
  • Ascaris, tapeworms, and flukes
  • Pinworm, whipworm, and threadworm

    • Which nematode is considered the most commonly encountered parasitic worm globally?

  • Hookworm
  • Whipworm
  • Pinworm
  • Ascaris (correct)

    • In which areas are intestinal nematodes of greatest concern?

    <p>Tropical areas and regions of poor sanitation</p> Signup and view all the answers

    What health issues can result from infestation by intestinal nematodes?

    <p>Growth retardation and malnutrition</p> Signup and view all the answers

    Which option correctly describes Trichinella spiralis?

    <p>A rare tissue nematode in the United States</p> Signup and view all the answers

    What is the main reason why direct person-to-person transmission of Ascaris eggs does not occur?

    <p>A maturation period is needed before the eggs become infectious</p> Signup and view all the answers

    How long can mature Ascaris eggs survive in the soil?

    <p>2 years</p> Signup and view all the answers

    Where do larval worms released from Ascaris eggs burrow through after being ingested?

    <p>Intestine, liver, and lungs</p> Signup and view all the answers

    How is Trichuriasis transmitted to humans?

    <p>By ingestion of whipworm eggs from fecally contaminated soil</p> Signup and view all the answers

    Where do adult forms of whipworms reside in the human body?

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

    What is the main symptom of pinworm infection in individuals?

    <p>Intense anal itching</p> Signup and view all the answers

    How are pinworm infections usually acquired?

    <p>Ingesting worm eggs transferred to hands from contaminated objects</p> Signup and view all the answers

    What is the main route through which pinworm eggs are deposited outside the body by female worms?

    <p>Through the anus</p> Signup and view all the answers

    How is hookworm disease primarily caused in humans?

    <p>Through skin penetration by hookworm larvae</p> Signup and view all the answers

    What is a common cause of acquired epilepsy in developing countries?

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

    How do humans become infected by tapeworms?

    <p>By ingesting the flesh of an infected animal</p> Signup and view all the answers

    Which country's immigrant populations, particularly Hispanics in the Southwest, are more likely to be affected by neurocysticercosis?

    <p>United States</p> Signup and view all the answers

    What is the major risk factor for the development of bladder cancer in individuals infected with blood flukes?

    <p>Damage to the bladder and ureters</p> Signup and view all the answers

    What type of infection can humans get from swimming in lakes contaminated by bird or animal schistosomes?

    <p>Schistosome dermatitis</p> Signup and view all the answers

    What is the main consequence of tapeworm infection in humans?

    <p>Nourishing the worm at the expense of the host's food</p> Signup and view all the answers

    Which organ does one species of flukes live in?

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

    'Swimmers itch' is more commonly referred to as:

    <p>'Schistosome dermatitis'</p> Signup and view all the answers

    'Taeniasis' refers to:

    <p>'Tapeworm infection'</p> Signup and view all the answers

    'Cysticercosis' is associated with which type of tapeworm?

    <p>'Pork tapeworm'</p> Signup and view all the answers

    How does hookworm infection occur?

    <p>Direct contact with larvae in soil contaminated with human feces</p> Signup and view all the answers

    What is a major clinical effect of hookworm infection?

    <p>Intestinal blood loss</p> Signup and view all the answers

    In which region has it been estimated that 30% of the population is infected with parasitic infection?

    <p>Sub-Saharan Africa</p> Signup and view all the answers

    What causes trichinellosis (trichinosis) infection?

    <p>Eating undercooked wild game</p> Signup and view all the answers

    How do larvae released from ingested Trichinella cysts develop within the body?

    <p>They burrow into the intestinal mucosa and produce more larvae</p> Signup and view all the answers

    How is Strongyloidiasis (threadworm) infection similar to hookworm infection?

    <p>Both infections occur via intact skin</p> Signup and view all the answers

    What is a potential severe symptom of trichinellosis infection?

    <p>Muscle pain</p> Signup and view all the answers

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