The information gets technical, but is very important. US lawyer Tom Renz, who is leading US litigation against Big Pharma and the Covid state, has uncovered that mRNA vaccines are really modRNA. mRNA, messenger RNA, is found through nature, but, modRNA is mRNA which has been genetically altered to make permanent changes in human genes. The material below deals with known adverse effects, but the unknown effects are perhaps even more of a concern, since if there are permanent changes to the human genome, we do know what unintended, or perhaps secretly intended effects, will come from this.
The radical decline in fertility could well be a product of this. And, keep in mind that the Covid vaxxes are still being pushed, with a new one to deal with the more recent variants. As well as that, future vaccines are likely to be mRNA, or modRNA based.