Why do vaccines not protect against viral diseases?

Answer 1

Some vaccines do protect against viral diseases such as the vaccine against chickenpox. However, vaccines against viruses are very difficult to make. Not only are viruses very small, but they are not living organisms. Viruses require a living host to carry on certain processes. Vaccines tend to kill a bacterium or a specific organelle of a bacterium that would affect its ability to survive and carry on its normal functions. Due to the fact that viruses are not living this poses a problem to the normal approach.

Answer 2

It activates the body's natural defenses and puts the body on "alert"

they do put the body on "alert" plus Vaccines introduce dead or dying viruses into the body, which results in the immune system producing T-bodies to help kill these weakened invaders. The T-bodies remain after the virus is eradicated, and providing there isn't a mutation in the virus, one will likely never suffer from the full-blown disease. Vaccines turn on your secerity on ur body to help prevent a virus from producing and destroying ur cells

both answers are correct but mine explains enough to make u understand

no offensive tings in mind

your answer is just as good as mine.:)

Answer 3

it kills the virus by injecting it with a fluid, therefor killing the virus

Answer 4

Antivirals, Antibiotics