Bacterial STIs include chlamydia, gonorrhea, and syphilis. Prophylactic antibiotic treatment for vaginitis, gonorrhea, trichomoniasis and chlamydia may be done. Common causative organisms include candida, chlamydia, and gonorrhea. About 500 million were infected with either syphilis, gonorrhea, chlamydia or trichomoniasis. It is not effective for gonorrhea or chlamydia infections. Their use greatly decreases the risk of gonorrhea, chlamydia, trichomoniasis, hepatitis B, and HIV/AIDS. Nucleic acid amplification tests are the recommended method of diagnosis for gonorrhea and chlamydia. Condoms are effective against the spread of STIs like chlamydia and gonorrhea that cause cervicitis. Mitchell also contracted herpes, chlamydia, hepatitis, and trichomoniasis. For this reason, gonorrhea and chlamydia testing are often combined. Monolaurin has been studied to inactivate many pathogens including Herpes simplex virus and Chlamydia trachomatis. Antibiotic treatment reduces the risk of active trachoma in individuals infected with chlamydia trachomatis. As of 2013, rates of chlamydia and gonorrhea alone were 24% among female performers. Trachoma is an infectious disease caused by bacterium "Chlamydia trachomatis". Mupirocin is inactive for most anaerobic bacteria, mycobacteria, mycoplasma, chlamydia, yeast and fungi.