3. 3
4
2
1
A substance that is used to
stimulate the body's immune
response against diseases.
Immunity enhancer
A preparation that is used to
stimulate the body's immune
response against a specific
infectious agent.
A biological preparation
that provides active
acquired immunity
What is a Vaccine?
4. World Health Organisation (WHO) 2021 Definition-
A vaccine is a biological preparation that improves immunity to a particular disease.
It is a simple, safe, and effective substance that protect you against harmful
diseases, before you come into contact with them.
Dr Edward Jenner
Source- Science photo library
• Dr Edward Jenner created the world's first
successful vaccine.
• He found out that people infected with cowpox were
immune to smallpox.
Source- Everyday Health
6. Reverse Vaccinology (RV)
• Dr Rino Rappuoli- Pioneer of Reverse Vaccinology
• The term reverse refers to the use of expressed DNA
over the purified proteins from the organism itself.
• Here vaccine development starts with bio informatics
genome sequence analysis.
• Reverse vaccinology uses the expressed genomic
sequences to find new potential vaccines.
Dr Rino Rappuoli
Source- Wikipedia
7. How does it work?
Source- Wikipedia Source- Wikipedia
