Septicaemia is a serious medical condition caused by the presence of bacteria in the bloodstream. It is also known as SEPTICEMIA or BLOOD poisoning. It is a potentially life-threatening infection that can cause organ failure and death if not treated quickly. The term 'septicaemia' is derived from the Latin words 'septum' meaning 'POISON' and 'haema' meaning 'BLOOD'. It is closely related to toxaemia, which is an infection caused by toxins produced by bacteria. Both conditions require prompt medical attention and can be fatal if left untreated.