The life on the earth cannot be completed without microbes as they play a significant role in making the planet earth as suitable for our living. Microbes are present in the human body as well and they act as digestive agents. Certain microbes however are harmful and affect our ability to cope with it. Immunology plays a role here by extending the knowledge about the inbuilt fighting mechanism present in the body. Hence, Immunology and Microbiology are interdisciplinary sciences.