My wife just had a visit to her gynecologist for vaginal swelling and her skin is slightly pealing on her vagina. Her Doctor took a swab and prescribed her Azithromycin 250 mg doses for 5 days. Her first day was a 500 mg dose. Her doctor said that she had a bacterial vaginal infection but never said it was a sexually transmitted disease according to my wife. Is Azithromycin used for bacteria vaginal infections other than a sexually transmitted disease? And could it be a sexually transmitted disease that is dormant in my wife or I that we just keep passing back and forth to each other? I have never been diagnosed with anything but my wife contracted herpes before we met.