Urdu: ہیپاٹائٹس بی ویکسین | Hepatitis B Vaccine | Medurstand by Prof Aziz ur Rehman

Introduction:
Vaccines are an invaluable tool in modern medicine, playing a crucial role in preventing the spread of infectious diseases. By stimulating the immune system to recognize and fight specific pathogens, vaccines have significantly reduced the incidence of deadly illnesses and saved countless lives. In this article, we will explore the importance of vaccines, their mechanism of action, and their impact on public health.

What are Vaccines?
Vaccines are biological preparations that contain weakened, killed, or parts of disease-causing organisms (such as bacteria or viruses). These components stimulate the body's immune response, helping it recognize and defend against future infections. By introducing harmless versions of pathogens, vaccines provide immunity without causing severe illness.

Mechanism of Action:
When a vaccine is administered, the immune system recognizes the foreign components within it. This triggers an immune response, including the production of specialized proteins called antibodies. These antibodies help neutralize the actual pathogen if encountered in the future, preventing or minimizing the infection's severity. Additionally, vaccines also stimulate the development of immune cells with memory, allowing the immune system to respond more effectively to future encounters with the same pathogen.
‪@Medurstand‬ by Prof Aziz ur Rehman