Name: Malaria and Its Symptoms
Uploaded: 2019-07-19
Duration: 6 min 10 s
Description: The females of any species are more dangerous than their male counterparts! Do you know how dangerous? Malaria is caused only by the bite of a female anophel...

Question

What is the basic principle of vaccination? How do vaccines prevent microbial infections? Name the organism from which hepatitis B vaccine is produced.

Accepted Answer

Vaccination is the administration of vaccine into an individual to develop protection against specific diseases. The basic principle of vaccination is the development of 'memory' of the immune system.
Vaccines are the biological preparation of dead or inactivated pathogens which after administrated into a human body to develop immune responses. Vaccines contain microorganisms that lack their ability to cause any diseases.

Process of preventing microbial infections by the vaccine-

After the administration of the vaccine into a human body, the body develops a primary response against it by generating memory B and T cells.

When the vaccinated person is attacked by the same pathogen, the already developed memory B and T cells act on it immediately. It leads to the massive production of lymphocytes and antibodies and eliminates any chances of infections.

The hepatitis B vaccine produced from the yeast (Saccharomyces cerevisiae) by the genetic engineering process. It is produced by using one of the viral envelope proteins of Hepatitis B virus (HBsAg).

What is the basic principle of vaccination? How do vaccines prevent microbial infections? Name the organism from which hepatitis B vaccine is produced.

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