Governments and officials around the world are hoping COVID-19 vaccines can create “herd immunity” to protect large populations. Some experts predict that giving a vaccine to just two-thirds of a population could protect whole communities or nations. But the effectiveness of such efforts is highly dependent on what the vaccines will be able to prevent. Herd immunity happens when a large percentage “of a community (the herd) becomes immune to a disease, making the spread of disease from person to person unlikely. As a result, the whole community becomes protected, not just those who are immune,” the Mayo Clinic notes on its website.
Title: How Many People Need Vaccines to Reach Herd Immunity?
Content: <div id='article-page'><div id='article-content' data-media-url='//news-app-staging.s3.amazonaws.com' data-base-url='//news-app-staging.herokuapp.com' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4733/C.wav' data-capture-url='//staging.analytics.lingraphica.com/events/capture_news' data-article-title='How Many People Need Vaccines to Reach Herd Immunity?' data-article-id='5258'><script src='//news-app-staging.herokuapp.com/javascripts/getscripts.js'></script><link rel='stylesheet' href='//news-app-staging.herokuapp.com/stylesheets/article.css' type='text/css' /><div class='article'><p><span data-start-time='0' data-end-time='13125'>Governments and officials around the world are hoping COVID-19 vaccines can create “herd immunity” to protect large populations.</span> <span data-start-time='13125' data-end-time='24938'>Some experts predict that giving a vaccine to just two-thirds of a population could protect whole communities or nations.</span> <span data-start-time='24938' data-end-time='33708'>But the effectiveness of such efforts is highly dependent on what the vaccines will be able to prevent.</span> <span data-start-time='33708' data-end-time='48042'>Herd immunity happens when a large percentage “of a community (the herd) becomes immune to a disease, making the spread of disease from person to person unlikely.</span> <span data-start-time='48042' data-end-time='58688'>As a result, the whole community becomes protected, not just those who are immune,” the Mayo Clinic notes on its website.</span> </p></div><div class='control-buttons-sticky' style='display:none;'><div class='control-buttons'><button title='Back' class='back' disabled='disabled'></button><button title='Play' class='play' disabled='disabled'></button><button title='Pause' class='pause' style='display:none;'></button><button title='Forward' class='forward' disabled='disabled'></button><button class='finished-reading' style='display:none;'>Done</button></div></div></div><div id='article-media'><div id='media-image'><img src='https://news-app-production.s3.amazonaws.com/articles/4733/C.jpg'/></div></div><div id='question-content' style='display:none;'><div class='vocabulary_question question-container' data-question-id=16413 data-hint-location='33708' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4733/_what_is_herd_immunity.wav'> What is herd immunity?</div><div class='choices' data-correct-choice='when a large percentage of a community becomes immune to a disease'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4733/when_a_herd_of_cattle_is_sent_to_the_meat_processing_plant.wav'><span>when a herd of cattle is sent to the meat processing plant</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4733/when_an_elk_family_is_sent_to_live_at_an_animal_preserve.wav'><span>when an elk family is sent to live at an animal preserve</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4733/when_a_large_percentage_of_a_community_is_infected_with_a_disease.wav'><span>when a large percentage of a community is infected with a disease</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4733/when_a_large_percentage_of_a_community_becomes_immune_to_a_disease.wav'><span>when a large percentage of a community becomes immune to a disease</span></div></div></div><div class='multiple_choice_question question-container' data-question-id=16414 data-hint-location='13125' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4733/what_percentage_of_a_population_must_be_vaccinated_to_establish_herd_immunity.wav'>What percentage of a population must be vaccinated to establish herd immunity?</div><div class='choices' data-correct-choice='two-thirds percent'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4733/twothirds_percent.wav'><span>two-thirds percent</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4733/100_percent.wav'><span>100 percent</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4733/onefourth_percent.wav'><span>one-fourth percent</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4733/ten_percent.wav'><span>ten percent</span></div></div></div><div class='question-buttons'><button class='skip-button'></button><button class='hint-button'></button><button class='speak-button'></button></div></div></div>
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