Introduction Clostridium difficile is a gram positive, anaerobic, spore forming bacillus. In 1935 it was first described as member of the intestinal flora in healthy neonates  , and then in 1978 it was recognised as a cause of diarrhoea . Today it is widely acknowledged as the leading cause of hospital-acquired diarrhoea. This organism can cause a variety of diseases, from mild diarrhoea to severe pseudomembranous colitis, and collectively these are known as C. difficile infections (CDIs)
recently been hospitalized develop an infection of the lungs. It occurs because the areas of the lung which absorbs oxygen (alveoli) from the atmosphere become filled with fluid and cannot work effectively. (Makati Medical Center, 2012) There are many causes of pneumonia, including bacteria, viruses, mycoplasmas, fungal agents, and protozoa.