So, we’ve (that’s the CDC- Centers for Disease Control- and the FDA- the Food and Drug Administration) decided to hold off using the Johnson & Johnson vaccine. (And, we’ve (that’s the USA) never even considered using the ASTRA-Zeneca version of the vaccine.) Today is the day the authorities will release (pun intended) the J&J version from purgatory. (That is my prognosis. Below is my reasoning why.)