This gets back to the ethical questions we raised before: How many deaths of young healthy people are acceptable in the pursuit of total immunization?

To answer that, we still need to know how effective AZ is against new variants. We heard that it wasn't effective against the Brazil and SA variants then the news dropped off.

If it's not effective against variants and kills young healthy people then it's hard to justify using it.

And there are probably other variables that could sway the course one way or another. Bottom line is that we don't know the full side effects of these vaccines, and we won't for at least a couple of years.