(link)
Please note that the safety aspect of any drug/treatment comes after establishing efficacy. If a medicine/chemical is not shown to be effective, the safety evaluation becomes mute; there is no need to discuss it further. The medicine is dead. However, if medicine is effective, one must assess its safety profile. If it is favorable, then one proceeds with its development. Otherwise, the medicine is dead.
From this perspective, it is critical to note that vaccines’ efficacy (effectiveness) has never been tested or established. I have repeatedly described it on my blog (link, link). So they are dead as medicines (scientifically). Promoting the development of safer vaccines is an argument based on ignorance and a useless endeavor, amounting to promoting fake and false medication. Sorry.