Question

Vaccines prepared through recombinant DNA technology are called ________.

• A. First generation vaccines
• B. Second generation vaccines
• C. Third generation vaccines
• D. All of these above

Answer 1

The correct option is C Third generation vaccines

• The first generation vaccines consist of live attenuated/ heat-killed vaccines in which whole organisms in the weakened live form or heat-killed form are injected.
• Second-generation vaccines are those vaccines in which isolated deactivated toxins are given.
• Third-generation vaccines are those in which recombinant techniques are used for the production of vaccines. In this technique DNA encoding, the antigen is inserted into a vector which will be recognized as a pathogen in the host. Such that the host immune system generates an immune response against the vector and thereby the antigen.
• So, the correct answer is 'Third generation vaccines'.