Why COVID-19 Vaccines Are Difficult to Manufacture and Improve Care

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With demand for COVID-19 A frustrated public and policy makers want to know: How can we do more? A lot more. Right now.
The problem: “It’s not like adding more water to the soup,” said vaccine specialist Maria Elena Bottazzi of Baylor College of Medicine.
COVID-19 vaccine makers need everything to grow production to hundreds of millions of doses – and any small hiccups can cause delays. Some of their ingredients have never been made in the quantities needed.
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And seemingly simple suggestions that other factories are brewing new types of vaccines cannot come overnight. Just this week, the French drug maker Sanofi …