ICSE Class 8 Answered

Vaccination

Immunisation

• It involves the introduction of a weakened / deactivated disease-causing microbe into a person.

• It is a process which begins after the person is exposed to the vaccine and the body starts building resistance to that disease.

• It is usually injected or administered orally.

• It is not administered in any way, the body develops the resistance from vaccines.

• It does not ensure complete resistance to a disease.

• Complete immunity occurs when the person fully recovers from the disease.

• Usually, if mutation happens to microbe, it might render the vaccine ineffective.

• Variations of a disease impact the body’s ability to generate an immune response.