Bacterial vaginosis (BV) is a disease of the vagina caused by excessive growth of bacteria.[6][9] Common symptoms include increased vaginal discharge that often smells like fish.[2] The discharge is usually white or gray in color.[2] Burning with urination may occur.[2] Itching is uncommon.[2][6] Occasionally, there may be no symptoms.[2] Having BV approximately doubles the risk of infection by a number of sexually transmitted infections, including HIV/AIDS.[8][10] It also increases the risk of early delivery among pregnant women.