Usually years. Sexually transmitted infection known to have neurolgical manifestations such as syphilis and hiv, may take years to show their effects. If syphilis is treated early, this late effect will not occur, because the disease is cured.
Yes. Doctors go back and forth on the preferred politically correct terminology, but they're the same thing.
Former causes Latter. A sexually transmitted disease is the manifestation of a sexually transmitted infection. The infection causes the signs, symptoms, and short and long term effects of disease. The disease is named for the agent that causes the infection. I hope this helps.
Several others! Chlamydia, hiv, hepb and c.
Barrier protection. If you will have sex. Know your partners past. Been promiscuous? Important point. If you will have sex than a condom for the male is essential.
No. Even though an infection could be transmitted during the act of sex does not mean that it falls into the category of sexually transmitted diseases.