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

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

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

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

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

In measles, when does the characteristic rash typically appear?

<p>After the appearance of Koplik spots (B)</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 (C)</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' (B)</p> Signup and view all the answers

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

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

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

<p>'Measles virus' (C)</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) (D)</p> Signup and view all the answers

Which virus is known to cause severe acute respiratory syndrome?

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

What is the primary mode of transmission for Coronaviruses?

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

Which virus is associated with Guillain-Barré syndrome?

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

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

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

Which virus primarily targets the respiratory epithelium for replication?

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

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

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

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

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

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

<p>Nucleolin receptor (D)</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 (C)</p> Signup and view all the answers

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

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

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

<p>Inhalation of large droplet aerosols (D)</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 (B)</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) (B)</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 (A)</p> Signup and view all the answers

Which clinical manifestation is a hallmark of mumps infections?

<p>Parotitis (B)</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 (D)</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 (B)</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 (D)</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 (A)</p> Signup and view all the answers

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