Babbage: Another dose of good news

<p>Following promising results from <a href="https://www.economist.com/leaders/2020/11/14/the-promise-of-the-new-covid-19-vaccine-is-immense?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-host&amp;utm_content=show-notes" rel="noopener noreferrer" target="_blank">Pfizer</a> and <a href="https://www.economist.com/science-and-technology/2020/11/19/a-second-vaccine-against-covid-19-arrives?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-host&amp;utm_content=show-notes" rel="noopener noreferrer" target="_blank">Moderna</a>, why is a third vaccine, from <a href="https://www.economist.com/science-and-technology/2020/11/23/success-for-a-third-and-perhaps-most-important-covid-19-vaccine?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-host&amp;utm_content=show-notes" rel="noopener noreferrer" target="_blank">Oxford University and AstraZeneca</a>, so important in the <a href="https://www.economist.com/briefing/2020/11/14/an-effective-covid-19-vaccine-is-a-turning-point-in-the-pandemic?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-host&amp;utm_content=show-notes" rel="noopener noreferrer" target="_blank">fight against covid-19</a>? Host Kenneth Cukier and The Economist’s health policy editor Natasha Loder investigate the different approaches to this immense challenge. And <a href="https://www.economist.com/by-invitation/2020/08/10/nicholas-christakis-on-fighting-covid-19-by-truly-understanding-the-virus?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-host&amp;utm_content=show-notes" rel="noopener noreferrer" target="_blank">Nicholas Christakis</a>, a doctor and network scientist at Yale University, explains how despite a vaccine the pandemic could change humanity for good.</p><p><br></p><p>Please subscribe to <em>The Economist</em> for full access to print, digital and audio editions:</p><p><a href="http://www.economist.com/podcastoffer?utm_campaign=babbage&amp;utm_medium=podcast&amp;utm_source=third-party-ho