Vaccine questions

True or False


Microorganisms may enter the body and cause illness before the immune system can destroy them.

True False

Vaccinations provide protection from microorganisms by creating antibiotics before infection.

True False

A vaccination contains a usually unsafe form of a disease-causing microorganism.

True False

Vaccination can never be completely safe, since individuals have different degrees of side effects from a vaccine.

True False

To prevent epidemics of infectious diseases, it is only necessary to vaccinate a small percentage of a population so that the infection cannot spread easily.

True False

New vaccines against influenza have to be developed regularly because the virus changes its antigens very quickly.

True False

It is difficult to develop an effective vaccine against the HIV virus (which causes AIDS) because the virus damages the immune system and has a high mutation rate. Mutations produce changes to its antigens.

True False

MMR is an example of a vaccination where there has been controversy over its safety.

True False

Vaccinations cannot be used against viruses.

True False

Microorganisms with a high mutation rate may change their antigens frequently making a vaccination less effective.

True False