Human Viruses and Viral Diseases
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Questions and Answers

Which virus is responsible for childhood gastroenteritis?

  • Rhinovirus
  • Influenza A virus
  • Norovirus (correct)
  • Respiratory syncytial virus

What virus causes German measles?

  • Rubella virus (correct)
  • Varicella-zoster virus
  • Hepatitis B virus
  • Influenza A virus

Which virus is associated with oral herpes?

  • Measles virus
  • Hepatitis C virus
  • Rhinovirus
  • Herpes simplex virus 1 (correct)

What virus causes chickenpox and shingles?

<p>Varicella-zoster virus (D)</p> Signup and view all the answers

Which virus causes acute viral hepatitis?

<p>Hepatitis B virus (C)</p> Signup and view all the answers

What virus causes infectious mononucleosis?

<p>Epstein-Barr virus (B)</p> Signup and view all the answers

Which virus is associated with acquired immunodeficiency syndrome (AIDS)?

<p>Human immunodeficiency viruses 1 and 2 (D)</p> Signup and view all the answers

What virus causes dengue hemorrhagic fever?

<p>Dengue viruses 1 to 4 (D)</p> Signup and view all the answers

Which virus is associated with progressive multifocal leukoencephalopathy (PML)?

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

Which virus exhibits only one genetic subtype and infects people only once?

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

Why can influenza viruses repeatedly infect the same individual?

<p>Because of periodic emergence of new genetic variants (B)</p> Signup and view all the answers

What has a major initiative by several governments and international bodies, including the World Health Organization (WHO), aimed to reduce significantly?

<p>Measles-related deaths (D)</p> Signup and view all the answers

Which children are 10 to 1000 times more likely to die of measles compared to children in higher-income countries?

<p>Children in lower-income countries (B)</p> Signup and view all the answers

What can produce severe disease in people infected with HIV or people with a hematologic malignancy?

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

In higher-income nations, when do epidemics of measles occur?

<p>When the virus is introduced by individuals traveling from an area of endemic disease (A)</p> Signup and view all the answers

What is the measles virus efficiently transmitted by?

<p>Airborne route via aerosolized respiratory secretions (D)</p> Signup and view all the answers

Which family does the measles virus belong to?

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

How is the measles virus diagnosed?

<p>By detection of viral RNA in respiratory secretions or urine (C)</p> Signup and view all the answers

What impact does the genetic diversity of viruses have on the susceptibility of the host to reinfection?

<p>It has an important impact on the susceptibility of the host to reinfection by viruses of the same type (C)</p> Signup and view all the answers

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