Sexually transmitted disease (STD) is used to refer a condition which passes from one person to another through sexual contact. A person can come in contact of sexually transmitted disease by having unprotected vaginal, anal or oral sex with someone who has the STD. STD may also be transmitted through sharing needles and breastfeeding (e.g. HIV).
Some STD can be passed from a mother to baby before or during the birth. because of passing the infection through the placenta or birth canal. e.g.
Syphilis is a bacterial infection. It is caused by Treponema pallidum bacteria.
The first symptom to syphilis is the appearance of small round sore known as a chancre. It can develop on genitals, anus or mouth. It is painless but very infectious.
AIDS is a viral infection. It is caused by the Human immunodeficiency virus (HIV). HIV can damage the immune system and raise the risk of another type of infection.