Lecture 15 - STDs Chapter18.5 ,sexual individuals...

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3/24/10 1 Chapter 18.5 The Reproduc3ve System: Maintaining the Species STDs For all of its benefits to the popula2on, sexual reproduc2on carries a real danger to individuals sexually transmi;ed diseases (STDs) These range in severity from a mild discomfort that can be cured with an2bio2cs to severe, recurring infec2ons to deadly diseases STDs STDs may be caused by bacteria, viruses, fungi, insects, or pro2sts Bacterial STDs include gonorrhea, syphilis, and chlamydia Yeast infec2ons are caused by a fungus Pubic lice are insects that burrow into the skin Vagini2s is usually caused by a parasite protozoan STDs Viruses transmi;ed through sex include HIV, herpes simplex virus (HSV) 1 and 2, human papillomavirus (HPV), and hepa22s B HSV 1: cold sores in the mouth and, less frequently, genital lesions HSV 2: mostly genital herpes Human papillomavirus, or HPV, is a group of viruses that may be sexually transmi;ed cause genital warts and in some cases can lead to cancer of the cervix, anus, penis, or vulva the CDC es2mates that over 20 million people are infected with HPV STDs Genital Herpes/ HSV Herpes
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