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Sexually transmitted infections can cause severe damage to your bodyâeven death. Except for colds and flu, STIs are the most common contagious (easily spread) infections in the United States, with millions of new cases each year. Although some STIs can be treated and cured, others cannot.
You have multiple sex partners or a recent new partner. Sometimes, the signs and symptoms of a sexually transmitted infection are similar to those of bacterial vaginosis. You try self-treatment for a yeast infection with an over-the-counter treatment and your symptoms persist.