Vaccines prepare the immune system to recognize and fight specific disease-causing organisms. They work by exposing the body to a harmless component or weakened form of a pathogen, helping the immune system develop a protective response. Vaccination has played a major role in controlling infectious diseases worldwide.
For government examinations, students should understand immunity, public immunization programs, and the difference between viral and bacterial infections. India’s Universal Immunisation Programme is an important topic because it aims to protect children and pregnant women against vaccine-preventable diseases.
