mRNA Vaccines: How Do They Work?
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How do mRNA vaccines work?

  • They introduce a weakened or inactivated version of the pathogen into the body
  • They contain the genetic instructions for producing proteins in our own cells (correct)
  • They mimic an infection and train the immune system to recognize a disease-causing agent
  • They contain the virus itself in the vaccine

    • Why were mRNA vaccines a long-standing ambition for scientists?

  • They offer fewer advantages over traditional vaccines
  • They contain the virus itself in the vaccine
  • They were hoped to offer many advantages over traditional vaccines (correct)
  • They contain the genetic instructions for producing proteins in viruses

    • What makes mRNA vaccines different from traditional vaccines?

  • They mimic an infection and train the immune system to recognize a disease-causing agent
  • They contain the virus itself in the vaccine
  • They contain the genetic instructions for producing proteins in our own cells (correct)
  • They introduce a weakened or inactivated version of the pathogen into the body

    • How do traditional vaccines usually work?

    <p>By introducing a weakened or inactivated version of the pathogen into the body</p> Signup and view all the answers

    What is the role of messenger RNA (mRNA) in mRNA vaccines?

    <p>To produce proteins from the virus in our own cells</p> Signup and view all the answers

    Why can mRNA vaccines be produced quicker and cheaper than conventional vaccines?

    <p>mRNA vaccines require the viruses to be grown in cells or chicken eggs, making production slower and more expensive.</p> Signup and view all the answers

    What is a major challenge that needed to be overcome in the development of mRNA vaccines?

    <p>The instability of mRNA, as it is quickly broken down in the body.</p> Signup and view all the answers

    What advantage does the speed of mRNA vaccine production offer for rapidly changing diseases?

    <p>It allows for easier adjustment to different strains of diseases.</p> Signup and view all the answers

    What did scientists find a way to alter in 2005 to reduce the immune response and increase protein production?

    <p>The mRNA itself to make it similar to what is naturally found in mammals</p> Signup and view all the answers

    Why were mRNA vaccines not developed earlier despite ongoing efforts since 1993?

    <p>They encountered technical hurdles such as instability and potential unintended immune reactions.</p> Signup and view all the answers

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