Hospital Associated Infections (HAI) or infections arising as a result of admission and treatment in a hospital can be one of the major causes of morbidity and mortality in hospitalised patients. The hazard extends to the staff working in hospitals and also into the community at large. This has become more important in today's changing environment, dealing with the threats of newly emerging pathogens and the widespread dissemination of old pathogens. Each year more is learnt about hospital infection control as a science.