U.S. secures 300 million doses of potential AstraZeneca COVID-19 vaccine
2:53pm PDT - May 21st, 2020 astrazeneca - ReutersThe United States has secured almost a third of the first one billion doses planned for AstraZeneca's experimental COVID-19 vaccine by pledging up to $1.2 billion, as world powers scramble for medicines to get their economies back to work.