Sexually transmitted diseases (STDs) or sexually transmitted infections (STIs) are usually acquired through sexual contact. The bacteria, viruses, or parasites that cause STDs can be transmitted from one person to another through blood, semen, or vaginal fluids and other body fluids. In medieval times, syphilis and gonorrhea were two of the most prevalent STDs in Europe. One theory suggests that syphilis was transmitted by crew members who contracted the disease on trips taken by Christopher Columbus.It is believed that they contracted syphilis while in the Americas and then transmitted it upon their return when they docked at ports in Europe.
Sailors are also believed to be responsible for the spread of gonorrhea from Tahiti to New Zealand during Cook's voyages. So, how did these infections reach our population in the first place? It's different for each one. It is believed that at least one STD (the HIV virus) was introduced to humans through primates (not necessarily through sex with primates, but through contact with blood and other body fluids). Once in the human population, it normally spreads from there. You can get an STD by having vaginal, anal, or oral sex with someone who has an STD.
Anyone who is sexually active can get an STD. You don't even have to “go all the way” (have anal or vaginal sex) to get an STD. This is because some STDs, such as herpes and HPV, are transmitted through skin-to-skin contact. Sexually transmitted infections (STIs), also known as sexually transmitted diseases (STDs) and the older term venereal diseases, are infections that are transmitted through sexual activity, especially vaginal intercourse, anal sex and oral sex. In the 20th century, the advent of penicillin and other antibiotics led to an effective cure for bacterial STDs.
At the end of the 20th century, the transmission of sexually transmitted viral diseases such as HIV and herpes emerged, infections that are not curable and that in some cases can be fatal. STDs are infections that are transmitted from one person to another, usually during vaginal, anal, and oral sex. Soon, sexual health clinics were created to identify and treat people with STDs and their partners, in order to prevent their spread in the general population. HIV, chlamydia, genital herpes, genital warts, gonorrhea, some forms of hepatitis, syphilis and trichomoniasis are all STDs. Before the advent of modern medicine, people's lack of knowledge and understanding about STDs contributed to the widespread transmission of infections, while there were few or no treatments available to treat the diseases. In addition, vertical transmission: mothers can transmit STDs to their babies during delivery and people can contract sexually transmitted diseases through rape, so even virgins have STDs.
Some STDs can have serious, life-changing consequences; syphilis, for example, can cause progressive destruction of the brain and spinal cord, leading to mental dysfunction and hallucinations, speech problems and general paresis. You may not realize that you have certain STDs until you have no damage to your reproductive organs (making you infertile), vision, heart or other organs. Some STDs may have been airborne or waterborne pathogens that they found very easy to transmit sexually and over time may have gradually lost the ability to be transmitted in other ways. In addition, many STDs (such as HIV and syphilis) can be transmitted from mother to child; you don't need to have sex to get an STD.