The diseases that are caused by the fimbriae bacteria are some of the most common examples in the clinical field. One major function of the fimbriae is to suppress the immune booster present in the body of the host by adhering the bacterial cells to the mucous membrane that is found in the organisms. There are certain receptor proteins present in the fimbriae that also tend to affect the other blood cells of the organisms. So, the fimbriae can be considered a very important component of the bacterial cells. With the use of fimbriae, the bacterial cells will not be able to adhere to the surface of the host cells and hence will not be able to cause any infectious diseases in the organisms.