Pratique du Shadowing: Study Identifies Problem in Polio Vaccine - Apprendre l'anglais à l'oral avec YouTube

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From VOA Learning English, this is the Health Report.
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From VOA Learning English, this is the Health Report.
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Is a new deadly polio virus hiding somewhere in the world?
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Some scientists believe this might be true.
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Polio causes paralysis, leaving victims unable to walk or move parts of their bodies.
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The disease does not usually kill.
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But polio was deadly when the virus appeared in the Republic of the Congo in 2010.
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Nearly half of the 445 people who were infected died.
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New research shows there might have been a weak spot in the polio vaccine.
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Researchers say mutations or changes in the polio virus were responsible for that unusually deadly outbreak.
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The researchers say new kinds of polio may come into existence as the world gets closer to stopping the virus.
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Felix Drexler is an expert on viruses at the University of Bonn in Germany.
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He says those infected in the Congo were different from other polio patients in an important way.
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He says about half of them remembered taking three doses of the live vaccine.
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He says they should not have gotten sick as a result.
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Mr. Drexler and other researchers studied that polio virus.
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They found it had some never-before-seen mutations.
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These changes prevented disease-fighting antibodies from attacking the virus.
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The Republic of the Congo had been polio-free before the 2010 outbreak.
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It ended after four nationwide vaccination campaigns.
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Experts say the worldwide end of polio is near.
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There have been fewer than 150 cases this year.
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Walt Orenstein is with the Emory Vaccine Center in the United States.
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He says health workers need to kill the virus in the last few areas where it remains.
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Then he says talk about mutant strains or stronger vaccines would be unnecessary.
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For VOA Learning English, I'm Alex Villareal.

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About This Lesson

In this lesson, you will practice your English listening and speaking skills by engaging with a health report on a troubling polio outbreak in the Republic of the Congo. This real-world context will help you understand complex vocabulary related to health and medicine. By shadowing the reporter's delivery, you will improve your pronunciation, intonation, and fluency. This exercise is particularly useful for English learners looking to enhance their speaking skills in formal or informational contexts.

Key Vocabulary & Phrases

  • Polio - A viral disease that can cause paralysis.
  • Vaccine - A substance used to stimulate the production of antibodies against a disease.
  • Mutations - Changes in the virus that may alter its characteristics.
  • Paralysis - The loss of the ability to move part or all of the body.
  • Infected - Having a disease caused by a virus or bacteria.
  • Antibodies - Proteins produced by the immune system to neutralize pathogens.
  • Outbreak - A sudden rise in the occurrence of a disease in a particular place.
  • Vaccination campaigns - Organized efforts to immunize populations against diseases.

Practice Tips

To make the most of your shadowing practice with this video, consider the following tips:

  • Use a shadowing app or a recording tool to listen and repeat sections of the transcript. Start by playing a short segment followed by your attempt to mimic the speaker's tone and pace.
  • Focus on the rhythm and natural pauses in the speaker’s delivery. Notice how they emphasize certain terms, particularly when discussing serious topics like health.
  • Record your own voice while shadowing the video. This will allow you to compare your speech to the original and identify areas for improvement in pronunciation and fluency.
  • Employ the method of shadowspeak by articulating phrases slowly at first, then gradually increasing your speed as you become more comfortable with the material.
  • Pay special attention to challenging vocabulary, such as "mutations" and "paralysis." Practice these words out loud several times to gain confidence.
  • Incorporate shadow speech into your daily routine by discussing the health topics covered in the video with a friend or online language partner, thus enhancing both speaking and comprehension skills.

Qu'est-ce que la technique du Shadowing ?

Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.

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