Fleas and Their Life Cycle

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Questions and Answers

What is the primary route of infection for Leishmania spp.?

  • Fomites such as bedding and clothing
  • Contaminated food and water
  • Bite of an infected sand fly (correct)
  • Direct contact with infected skin lesions

What is the role of dogs in the transmission of Leishmania spp.?

  • They are important reservoirs for human infection in some countries (correct)
  • They are dead-end hosts for the parasite
  • They are the primary vectors of Leishmania spp. transmission
  • They are not susceptible to Leishmania spp. infection

What is the characteristic of the cutaneous and visceral forms of Leishmania spp. disease?

  • They are only found in the US
  • They are mutually exclusive
  • They only occur in dogs
  • They both involve skin lesions (correct)

Why are sand flies not considered important pests in most of the US?

<p>They are present but not important vectors of disease (C)</p>
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What is the significance of vertical transmission in Leishmania spp. infection?

<p>It can result in congenital infection (C)</p>
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What is the characteristic of the development of signs in Leishmania spp. infection?

<p>Signs may not develop for years after clinical exposure (C)</p>
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What is the role of free living nematodes in disease?

<p>They invade inflamed skin in certain conditions (A)</p>
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What is the significance of testing for and treating parasites in dermatitis cases?

<p>It is critical to rule out underlying parasitic infections (B)</p>
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What is the characteristic of the number of species and subspecies of Leishmania spp.?

<p>It is a very confusing and large number of species and subspecies (D)</p>
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Which of the following mites is known for causing 'walking dandruff' in animals?

<p>Cheyletiella (D)</p>
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What is the common mode of transmission of Cheyletiella mites?

<p>Direct contact transmission (C)</p>
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Which of the following drugs has been reported to be effective in treating Cheyletiella mite infestations?

<p>All of the above (D)</p>
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Which of the following mites is commonly found in birds?

<p>Ornithonyssus (D)</p>
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What is the characteristic of the mite Pneumonyssus caninum?

<p>It has a pair of claws on its first pair of legs (D)</p>
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What is the common clinical sign of Cheyletiella mite infestation in cats?

<p>All of the above (D)</p>
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Which of the following is a characteristic of Dermanyssus mites?

<p>They clasps hairs (B)</p>
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What is the significance of environmental control in managing Cheyletiella mite infestations?

<p>It is very helpful (B)</p>
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Can Cheyletiella mite infestations cause transient human lesions?

<p>Yes (C)</p>
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Which of the following is a characteristic of Lynxacarus radovskyi mites?

<p>They clasps hairs (C)</p>
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