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</p> Signup and view all the answers

    Which virus causes acute viral hepatitis?

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

    What virus causes infectious mononucleosis?

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

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

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

    What virus causes dengue hemorrhagic fever?

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

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

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

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

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

    What is the measles virus efficiently transmitted by?

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

    Which family does the measles virus belong to?

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

    How is the measles virus diagnosed?

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

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