Major objective of this lecture is to present on Sexually Transmitted Diseases (STDs). Sexually transmitted diseases are infections that you can get from having sex with someone who has the infection. The causes of STDs are bacteria, parasites and viruses. There are more than twenty types of STDs, including; Chlamydia, Gonorrhea. It is serious, sometimes painful, and can cause a lot of serious damage. STD is spread during close, sexual activity. It is spread during vaginal, anal and oral sex. HIV and Hepatitis are also spread by contact with infected blood.