| STI | Number of new cases per year in the United States | Symptoms | Treatment |
|---|---|---|---|
| Human papillomavirus (HPV) | 14 million | There are many types of HPV. Men and women can experience warts in the genital area. HPV can also lead to cervical and other cancers. | No cure. Treatments exist for illnesses caused by HPV. |
| Chlamydia | 2.5 million+ | Many people have no symptoms. Women can have vaginal discharge. Men can experience discharge from their penis or pain when urinating. | Curable. Treated with antibiotics. |
| Gonorrhea | 800,000+ | Men may have a burning sensation when urinating or a yellowish, white, or greenish discharge from their penis. Women may have pain or discharge, but most have no symptoms. | Curable. Treated with antibiotics, but some drug-resistant strains are developing. |
| Genital herpes | 750,000+ | One or more blisters near the genitals. Commonly mistaken for a skin infection. | No cure. Outbreaks are treated to shorten duration. |
| Syphilis | 55,000+ | Sore on the skin or genitals is the first sign. Left untreated, rashes and sores then appear on other parts of the body. | Curable. Treated with antibiotics. |
| HIV/AIDS | 45,000+ (HIV) | Few or no symptoms early. Later, men and women may have weight loss, fatigue, cough, fever, or white spots on the tongue or throat. | No cure. Medications help people live with the disease. |