Yogagirl This is getting funnier and funnier. Why would Pfizer put a sterility drug in the vaccine? And what has viagra got to do with it? Viagra is a help with erectile misfunction.
Sterility is something else entirely with many causes. A man who cannot, as they say, get his end up, can still be fertile and capable of fatherhood. One who can do the business can still be infertile.
The other point you seem unaware of is that viagra came out of patent last year, so if the COVID vaccine causes sterility/ erectile misfunction, whichever you fancy, those who benefit from the boom will not be Pfizer, but all those companies in India, China, etc who will be producing much cheaper generic versions of the drug, not branded versions.