RNA Viral Classification and Taxonomy Quiz
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Questions and Answers

Which virus is known to cause Koplik spots in the oral mucosa before the onset of the classic rash?

  • Hantavirus
  • Coronaviruses
  • Rubella virus (correct)
  • Mumps virus
  • What is a rare but severe complication of mumps involving inflammation of the brain and spinal cord?

  • Pneumonia
  • Encephalitis (correct)
  • Myocarditis
  • Otitis media
  • Which of the following is NOT a typical clinical manifestation of measles?

  • Koplik spots in the mouth
  • Runny nose and cough
  • High fever and muscle pain
  • Blister-like skin lesions (correct)
  • In mumps infections, what is a rare outcome that can involve inflammation of the testicles in males or ovaries in females?

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

    What distinguishes the rash seen in measles infections from other viral rashes?

    <p>Target-like appearance with concentric rings</p> Signup and view all the answers

    What is the most feared negative outcome of measles infection on the central nervous system?

    <p>Subacute sclerosing panencephalitis (SSPE)</p> Signup and view all the answers

    What are the characteristic lesions that appear before the rash in a patient with measles?

    <p>Koplik spots</p> Signup and view all the answers

    Which of the following glands commonly swell in cases of mumps?

    <p>Parotid gland</p> Signup and view all the answers

    What is a rare but serious complication of mumps that may cause sterility in males?

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

    In measles, when does the characteristic rash typically appear?

    <p>After the appearance of Koplik spots</p> Signup and view all the answers

    Which of the following is a potential severe complication of measles involving inflammation of the brain?

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

    What term is used to describe the most contagious phase of measles, characterized by fever and respiratory symptoms?

    <p>'Prodromal phase'</p> Signup and view all the answers

    Which clinical feature distinguishes mumps from other viral infections like influenza or rhinovirus?

    <p>'Parotid swelling'</p> Signup and view all the answers

    'Encephalitis' is a known complication associated with which viral infection?

    <p>'Measles virus'</p> Signup and view all the answers

    Which severe neurological condition is a long-term complication sometimes associated with measles infection?

    <p>Subacute sclerosing panencephalitis (SSPE)</p> Signup and view all the answers

    Which virus is known to cause severe acute respiratory syndrome?

    <p>Respiratory Syncytia virus</p> Signup and view all the answers

    What is the primary mode of transmission for Coronaviruses?

    <p>Respiratory droplets</p> Signup and view all the answers

    Which virus is associated with Guillain-Barré syndrome?

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

    What is the mechanism by which Respiratory Syncytia virus binds to host cells?

    <p>Glycoprotein binding to integrins</p> Signup and view all the answers

    Which viral infection can lead to hydrophobia as a clinical manifestation?

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

    Which virus primarily targets the respiratory epithelium for replication?

    <p>Respiratory Syncytia virus</p> Signup and view all the answers

    Which viral infection is associated with myocarditis as a potential complication?

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

    Which of the viruses listed is known to cause vesicular lesions on the skin?

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

    What is the key cellular receptor targeted by Hantavirus for cell entry?

    <p>Nucleolin receptor</p> Signup and view all the answers

    Which of the following viruses is characterized by its ability to cause congenital rubella syndrome in pregnant women?

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

    Which surface glycoprotein is important for viral binding of paramyxoviruses to the host cell?

    <p>Hemagglutinin (H)</p> Signup and view all the answers

    In paramyxoviruses, which activity is required for cleaving sialic acid on viral or cellular glycoproteins to prevent self-binding and binding to infected cells?

    <p>Neuraminidase (N)</p> Signup and view all the answers

    What is the primary method of transmission of paramyxoviruses among individuals?

    <p>Inhalation of large droplet aerosols</p> Signup and view all the answers

    Which immune cells play a significant role in the immune-mediated cell injury resulting from respiratory syncytial virus (RSV) infections?

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

    What is the most common cause of fatal acute respiratory tract infection in infants and young children?

    <p>Respiratory syncytial virus (RSV)</p> Signup and view all the answers

    Which Paramyxovirus binds to sialic acid on epithelial cells of the upper respiratory tract before moving to the parotid gland?

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

    Which clinical manifestation is a hallmark of mumps infections?

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

    What role does the HN protein play in mumps virus infection?

    <p>Enables attachment to sialic acid on epithelial cells</p> Signup and view all the answers

    Which condition may result from mumps virus infection and cause inflammation of the brain and spinal cord?

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

    What diagnostic method is used to detect antigens in urinary sediment or blood samples for measles diagnosis?

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

    What treatment option is available for measles cases involving administration of high-dose vitamin A as recommended by the World Health Organization?

    <p>High-dose vitamin A</p> Signup and view all the answers

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