Varilix is a varicella virus itself.
Hepatitis a
Yes, distemper is a virus. If the animal is vaccinated, it will not contract distemper.
For humans, no. But other horses are at risk if not vaccinated for the Rhino virus.
it seem that the vaccine adds virus to your body which has more virus resulting your fever.
Antibodies
There is no available vaccine for the HIV virus.
It is a virus. Generally, you'd get it from someone else who has it. If you're in the USA, you probably were vaccinated for it and hopefully you won't get it.
If a student is vaccinated against mumps, then he will not get mumps. He is susceptible for all other virus infections. Suppose you vaccinate a student for Flu. Still he can get the infection from other strains of the Flu. So immunity is very specific for perticular virus and strain of virus.
Rubella is not a real big problem in childhood but it can and does cause some bad problems in an unborn child. That child can be seriously damaged by the virus. If just girls were vaccinated, the unborn child could be exposed to the virus by boys or even men who are sick with it. They could live in the same household or next door. Because they are vaccinated, they help to protect the people in their family.
The influenza virus mutates so rapidly that a new "crop" requires a yearly vaccination. Each year you are getting vaccinated for a new virus.
I'm not exactly sure what you're question is. If you are asking whether or not horses can contract the West Nile virus, the answer is yes! This virus is frequently spread through mosquitoes. It is very important that you get your horse vaccinated against the virus.