Assertion : Immunisation is achieved by the successful delivery of vaccines.
Reason : Vaccine is a preparation of one or more microbial agents, used to induce active immunity.

Assertion : Principle of vaccination is based on the property of 'memory' of the immune system. Reason : In vaccination a preparation of antigenic protein of pathogens or inactivated/ weakened pathogen are introduced into the body.

Assertion : Principle of vaccination is based on the property of 'memory' of the immune system. Reason : In vaccination a preparation of antigenic protein of pathogens or inactivated/ weakened pathogen are introduced into the body.

Assertion : Principle of vaccination is based on the property of 'memory' of the immune system. Reason : In vaccination a preparation of antigenic protein of pathogens or inactivated/ weakened pathogen are introduced into the body.

Assertion (A): Artificial chemicals are injected through vaccination. Reason (R): Vaccination is a process of immunization.

Assertion : Transgenic mice are being developed for use in testing the safety of vaccines Reason: If successful and found reliable they could replace the use fo monkeys to test the safety of batches of the vaccine

Assertion (A): Toxoids are used in vaccines. Reason (R): Toxoids are bacterial toxins which help in the formation of antibodies.

Assertion : Active immunity is acquired through the use of a person's immune responses, which lead to the development of memory cells. Reason : Active immunity results from an infection or an immunization.

Read the following statements and select the correct ones. (i) Vaccine is a preparation (or suspension ) of a dead/attenuated pathogen of a disease which on inoculation ( or injection ) into a healthy person, provides temporary/permanent active immunity by inducing antibodies formation. (ii) Immunisation is the process by which the body produces antibodies against the vaccine preventable diseases through administration of specific vaccines. (ii) Immunisation is the process by which the body produces antibodies against the vaccine preventable diseases through administration of specific vaccines.

Assertion : Anti - AIDS vaccines are being developed in USA. Reason : These vaccines may be used to control HIV infection in India.