Don't feel badly. Very few do. It's a very complicated subject.........too complicated to explain here in detail. But let me just say that many viruses have been found in semen. As to your ED question, it is highly unlikely that one would get ED from the vaccine, unless there was a reaction to the vaccine, which would trigger an auto-immune response targeting the blood vessels, adrenals or testes.
Here is an article that may shed some liight.
Human semen can host up to 27 different viruses
By
Karl GruberSep. 20, 2017 , 8:00 AM
When scientists discovered that the Zika virus can survive in semen for up to 6 months, people exposed to the disease—especially those hoping to have children—were horrified. It’s now known that the virus can be sexually transmitted up to 41 days. Now, a new meta-analysis has found that 26 other viruses can also live in human semen and go on to infect the bloodstream. Those include the viruses that cause Ebola, HIV, hepatitis B, and herpes. After reviewing more than 3800 scientific publications, the authors also found evidence that at least 11 viruses can live in the testes, including those that cause influenza, dengue, and severe acute respiratory syndrome. These viruses could potentially be found in semen, too, the authors say. Though not all 27 viruses are capable of person-to-person transmission, they can have other serious
THE REST OF THE STORY