Also, how would you do control testing for vaccines?
This exists because of a bill sheltering vaccine manufacturers from all liability.
As for control testing, you give some people a saline solution, others the shot, and others the shot with no virus. Put the issue to rest.
Again, what the heck. I'm answering the question.
Wait, why do you need the third group (saline solution) as part of the control?
The saline is to rule out effects from the preservatives and adjuvants used. The viral component of vaccines isn't what anti-vaxxers usually worry about.
No, it's because the average person has no idea what they are talking about and do primitive correlation.
After a flu shot you can very well feel unwell as your immune system ramps up to eliminate the inactive virus. The real flu is actually nasty. Most people just have colds and never experience full blown flu until they finally do and regret.
My big thing is safety and accountability. Currently, if a vaccine is harmful, the company that makes it has no liability, /and/ there's no control/test testing. The only way they're tested is by giving people the same shot with and without the viral component.
Problem is, saying anything that makes vaccines not sound like unicorn blood makes you one of "them", and you obviously want everyone to die of polio.