Perhaps I am making an incorrect assumption, but when it is reported that 30,000 participants are being inoculated, I take that to mean that about 15,000 are getting the vaccine and about 15,000 are getting a placebo. But then I see this:
Statisticians have been crunching the numbers to predict how many infections would need to occur in the study population to gauge the vaccine’s effectiveness. To show the Moderna vaccine is 60 percent effective, Fauci said, there would need to be about 150 infections among the 30,000 participants. WAPO
That leads me to believe that the number of persons being innoculated with the 'real deal' is 30K, meaning that the entire pool, including the control group, is more on the order of 60,000.
Are there 30K volunteers or 60K volunteers?