Our immune system fight for the pathogenic microbes in our body. Our body have cells that are fighting off microbes. Our body have cells that are microbes or foreign body enters our system, these cells become active and kill the microbes that could cause any damage to the body. These immune cells manage to kill off the infection and a person does not get disease.The strong immune system of a healthy person normally fights of microbes.
- The immunity, which is present in an organism by birth is called innate Immunity. Innate immunity refers to the body’s defence system.
- An individual acquires immunity after birth, hence is called adaptive or acquired immunity. Adaptive immunity develops throughout our lives
- Passive immunity is developed by antibodies that are produced outside the body. This immunity lasts for a short time.
- Active immunity is a type of adaptive immunity, which is developed due to the production of antibodies in one’s own body.