A COVID-19 vaccine life cycle: from DNA to doses
Article by Elizabeth Weise and Karen Weintraub, USA TODAY
Making a vaccine against the coronavirus is a complicated, months-long process. Pfizer is working to get it done faster. It still takes time.
On the evening of March 20, 2020, Chaz Calitri was getting ready to start in on his family's Friday night pizza-making tradition when his boss called.
The pharmaceutical giant Pfizer had decided to make a vaccine to fight COVID-19, the new disease caused by the novel coronavirus spreading with frightening speed in the U.S. The factory Calitri ran in Kalamazoo, Michigan,
