In this general article are presented recent findings about molecular aspects that explain the dynamic of biologic, antigenic and pathogenic behavior of bovine viral diarrhea virus and a new syndrome associated with this virus. Beside, it is discussed the situation of the bovine viral diarrhea/mucosal disease in Chile.
Key words: Virus, bovine viral diarrhea, bovine. Palabras claves: Virus, diarrea viral bovina, bovinos.