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Bacterial vaginosis (or BV) is a common vaginal infection and the most common cause of unusual discharge in women, although 50% of women will have no symptoms at all. The most common symptom of Bacterial vaginosis is unusual vaginal discharge that has a strong fishy smell, particularly after sex. You may notice a change to the colour and consistency of your discharge, such as becoming greyish-white and thin and watery.
Bacterial vaginosis is caused by a bacterial infection, it is not an STI but can be passed during sexual contact between women.
You can avoid bacterial vaginosis by using non-perfumed soap, strong detergent and changing tampons or sanitary pads frequently. Sometimes there is no known cause for bacterial vaginosis