Even if they come up with a vaccine, many will refuse to take it.

RNA viruses will never have effective vaccines because they mutate too fast. Please learn science.

What do measles, mumps, rubella, rabies and polio have in common?

Failed vaccines that are ineffective? (see the various instances where part or all of a population was vaccinated and still got them).

If something isn’t 100% effective it is ineffective. Got it.

Well you weight the side effects against the cost of just having the virus. For instance most children that are healthy and have their vitamins can easily survive measles and be immune for life, whereas if they take the vaccine they have about 45% protection for a few years and it starts going down from there. The side effects are things like:
* https://en.wikipedia.org/wiki/Guillain%E2%80%93Barr%C3%A9_syndrome
* https://www.drugs.com/sfx/measles-virus-vaccine-side-effects.html

Now polio is so deadly that I might consider getting that vaccine (in fact I did get it before I was eductated on vaccines). We now know that in Africa Bill Gates's polio vaccine is causing more cases than its curing:
https://www.westonaprice.org/studies-show-that-vaccinated-individuals-spread-disease/
https://www.the-scientist.com/news-opinion/polio-vaccination-causes-more-infections-than-wild-virus-66778

Do you believe any vaccines are effective?

Well first you have to define what you mean by vaccine?
A. Viruses exposed to radiation or mutagens and then injected into a person along with a chemical that causes an immune reaction.
B. Viruses that have been genetically altered to not have negative side effects along with a chemical that causes an immune reaction.
C. Viruses that are genetically created to insert their DNA package into your cells to make them change enough to not be affected by a certain other virus
D. A virus in the same family that is completely natural but harmless (or nearly harmless)

Idk, whatever definition you used in your original comment in on the meme.

There was a study done on the Amish (who have no other vectors for health issues) from before they started taking vaccines and after they started taking vaccines. The incidents of autism and other side effects skyrocketed after the vaccines were introduced.

Yes, be obedient muzzled dog. Cuz that's what you are when wearing mask. How stupid can ppl be? They freaking spammed news with SCIENCE on ineffectivness of masks in these situations. Now they say wear a mask... You wear a mask now-and admitting to everyone your brain is a popsicle. Congrats