Sexually transmitted diseases fully explained. Includes information about the transmission of sexually transmitted diseases - STDs, and facts about symptoms, diagnosis, and treatment, as well as prevention. common symptoms that might indicate you have a sexually transmitted disease. Sexually transmitteddiseases (STDs) are among the most common nfectious diseases in the United States today. More than 20 STDs have now been identified, and they affect more than 13 milion men and women inthis county each year. It is important to understand at least five key points about all STDs in this country today Sexually Transmitted Diseases and the Organisms Responsible. Disease. Organism(s) Some 56 million Americans have an STD other than AIDS and many more are infected each year. The causative bacterial, viral, or parasitic agents are spread primarily by sexual contact, but may also be spread by the use of infected needles. Sexually transmitted diseases fully explained. Includes information about the transmission of sexually transmitted diseases - STDs, and facts about symptoms, diagnosis, and treatment, as well as prevention. common symptoms that might indicate you have a sexually transmitted disease. Sexually transmitted diseases fully explained. Includes information about the transmission of sexually transmitted diseases - STDs, and facts about symptoms, diagnosis, and treatment, as well as prevention. common symptoms that might indicate you have a sexually transmitted disease. A basic description of each STD, and links to detailed information about each STD. Introduction to. Sexually Transmitted Diseases (STDs) Find an STD AIDS / HIV Chancroid Warts Molluscum Contagiosum NGU Pelvic Inflammatory Disease (PID) Scabies Syphilis Vaginitis