MU Virus or Barbitolis was a biological weapon used circa 34 BG during Great Democratic civil and Great Universal War. It was the ancestor of two viruses, MUAV and MAAV which were responsible for the two leading causes of death, Multisclerotic premature advance syndrome and Multiatherosclerotic premature advance syndrome. Both the diseases were spread by all known transmission types. Byozalian weakness syndrome counted totally 150 billion deaths and Cardio aortopulmonary artery weakness syndrome 270 billion deaths in which it was believed that the 65% of victims were Humans. Many scientists and researchers thought that the victims were more. This virus was formed firstly from cardiac disease sufferer electroeagles that were later infected from opportunistic byocelian disease.