Outline Bacterial and Ecto STIs no photos(3)

Outline Bacterial and Ecto STIs no photos(3) - Sexually...

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Unformatted text preview: Sexually Transmitted Infections  Chicken pox and genital herpes are caused by closely related viruses  Genital herpes stigmatized  Chicken pox not so much – Genital herpes = STI  Only illnesses categorized by mode of transmission rather than type of source Sexually Transmitted Infections  More than 25 diseases anal, oral or vaginal sex  Effects not limited to reproductive organs  Do not always involve sexual activity  Infectious agents enter body through mucous membrane Warm moist surfaces of vagina, urethra, anus and mouth • more sex • more partners • less spermicides & condoms • no outward signs • guilt, embarrassment Why is incidence of STIs so high in 15 to 25 year olds? How are STIs spread? • Oral, anal or vaginal intercourse & “activity” • Some STIs such as HIV and Hepatitis B can also be transmitted by sharing needles. STI versus STD? • Microbes (bacteria, virus, protozoa etc) spread through sexual contact used to be called “sexually transmitted diseases” (STDs) • Several common STDs have no signs or symptoms = infection – Or may be mild and easily overlooked • Microbes that create an infection, may or may not result in a disease state. • chlamydia, gonorrhea, herpes, human papillomavirus (HPV) Microbes that cause Sexual Transmitted Infections • Most STIs caused by single celled organisms – bacteria, protozoa, fungi • or viruses (microscopic parasites “machines”) Common STIs in U.S. caused by a variety of organisms • Bacteria – chlamydia – gonorrhea – syphilis – bacterial vaginosis • Protozoa – trichomoniasis • Fungus – Candidiasis, yeast • Viruses – genital herpes – human papillomavirus – Hepatitis A, B & C – HIV/AIDS • Animals : - mites, scabies- nematodes STIs caused by...
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This note was uploaded on 11/29/2010 for the course BIO 30 taught by Professor Kahn during the Spring '09 term at UC Riverside.

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Outline Bacterial and Ecto STIs no photos(3) - Sexually...

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