Actinomycosis is a rare type of infectious bacterial disease.Unlike other infections, actinomycosis is able to move gradually and infiltrate the body's tissue, causing swelling and inflammation. Eventually there is tissue damage and scaring, pus-filled abscesses appear in the mouth, lungs, or gastrointestinal tract. Small holes leaking pus form in the affected tissue. Actinomycosis is caused by a species of bacteria known asactinomyces, which live harmlessly in the lining of the mouth, throat, digestive system and women's vagina. If the tissue-lining becomes damaged by injury or disease, the bacteria can penetrate deeper into the body - the actinomyces bacteria then thrive deep inside human tissue. This bacterial disease is very rare in humans, but more common in farm animals. In cattle it is called lumpy jaw. An OSH glossary used in safety and health at work which is, adopted by ILO