What is an injection of a dead or weakened pathogen?

An injection of a dead or weakened pathogen is known as a vaccine. Vaccines stimulate the immune system to recognize and fight off the actual pathogen if encountered in the future, thereby providing immunity. By introducing these inactivated or attenuated forms of the pathogen, the body produces antibodies without causing the disease. This approach helps prevent infections and contributes to public health by reducing the spread of Infectious Diseases.