Vaccine Wars

We are in the eighth month of quarantine in the United States, and everyone is aching for a vaccine. When is it going to be finished? What company is frontrunning the vaccine race? Will it be completely effective? While there is a great deal of uncertainty in this dilemma, there are currently three leading companies: Moderna, AstraZeneca, and Pfizer, each competing to deliver a version of the COVID-19 vaccine.