Sexually transmitted diseases are infections that spread through sexual contact with infected individuals.
STDs can be contracted by having unprotected anal, vaginal, or oral sex with someone who has a sexually transmitted disease.
STDs can also spread via sharing needles with an infected person.
The causative agent of STDs is pathogenic bacteria and viruses.
Examples of sexually transmitted diseases (STDs):
Gonorrhea:
Gonorrhea is a sexually transmitted infection caused by a bacteria, Neisseria gonorrhoeae.
The bacteria infects the mucous membranes of the body, and it can be found in the seminal and vaginal fluids of an infected person.
Syphilis:
Syphilis is a sexually transmitted infection caused by the bacteria Treponema pallidum.
It commonly affects men as compared to women.
The first symptom of syphilis is the emergence of a small round sore known as a chancre.
The chancres can appear on the mouth, genitals, and anus.
It is an extremely contagious disease.
Acquired immunodeficiency syndrome (AIDS):
Acquired immunodeficiency syndrome (AIDS) is caused by the human immunodeficiency virus (HIV).
HIV attacks the CD4 cells of the host body and reduces the count of immune cells.
The reduction in immune cells of the host makes it immunocompromised, and it can increase the chances of getting infected by other pathogenic agents or diseases.