<a href="http://www.cnn.com/specials/politics/joe-biden-news" target="_blank">President Joe Biden</a> announced Wednesday that he is directing the US Department of Health and Human Services to purchase an additional 100 million doses of the Johnson & Johnson <a href="http://www.cnn.com/2020/02/06/health/wuhan-coronavirus-timeline-fast-facts/index.html" target="_blank">Covid-19</a> vaccine.
The administration and the pharmaceutical giant still need to negotiate when these 100 million
