This is an introductory course in medical microbiology. It explores and covers basic principles of bacteriology, virology, mycology, parasitology and immunology. It discusses different types of microorganisms as infectious agents and emphasis on their structures and products that allow them to cause disease. It examines the host/pathogen relationship from the standpoint of the pathogenic organism, the human host, and the environment. Also it studies the Epidemiology and the Nosocomial infections with focusing in pandemics with the importance of sterilization and disinfection.Preparing the student for the Advanced Clinical Microbiology courses