STDsLecture_SPRING_2011[1]

STDsLecture_SPRING_2011[1] - March 24, 2011 STDs- We are...

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Unformatted text preview: March 24, 2011 STDs- We are half way through the Exam Three material.- Have you answered the study questions for the first three lectures?- On Tuesday, April 12 th , we will have a Pre- quiz on the lecture material for Exam Four .- You will receive 4 extra credit points for taking the quiz.- Plus -- at least five of the questions will be on the Final Exam. Appreciation is expressed to Dr. Mark Whalon for much of the content of this presentation. Throughout the world -- 333 million new cases of curable sexually transmitted diseases (STDs) occur each year among adults. The rates of STDs are *** 50-100 times higher in the US than in other developed nations ( 1 in 5 by age 21). 15.3 million new cases of STDs are reported in the US each year ( 5% of the total population). 3 million occur in persons aged 13 to 19 years. 63% are under 25 years old!! Sexual Principle: Every sexual liaison is more than just fluid dynamics . its also sharing of microorganisms . One experienced person, can infect another person in just one sexual encounter. From a microorganism point of view its like having sex with all of your partners previous partners, and all of their partners ! WARNING -- Graphically Explicit Material Herpes Simplex Seven species infect humans. Virus -- infects all vertebrates. Syphilis Cause: Spirillum bacterium Treponema pallidum Enters body through tears in epidermis. May cause: Miscarriage Stillbirth Syphilitic newborn 1940s poster Can cause paralysis Syphilis symptoms: canker sore, rash, vital organ damage US reported cases: >38,000 Treatment: Antibiotics Complications: Death, fetal transmission, prematurity, birth defects, stillborn Syphilitic chimp US cases age 13-24/year = 1 in 12,500 Gonorrhea Cause: bacterium Neisseria gonorrhea 16 species known Can cause sterility in females. US reported cases: >10 million, 800,000 new cases a year. Treatment: Antibiotics Symptoms: Women: may have none Men: painful urination, fever 50% of women and 20% of men get it after one exposure!!!! (But may not have symptoms for weeks!) Gonorrhea US cases ages 13-24/year = 1 in 800 AIDS (Acquired Immune Deficiency Syndrome)-Cause: Human Immunodeficiency Virus (HIV)-Reported US cases: 8,548 in Michigan, 412,471 nationwide (1 in 100 students in 1990s) Killed more Americans (416,872) than World War II (400,000)-- 19 million worldwide-Treatment: Drugs to delay, no cure-Complications: Death, Fetal transmission = death Cause: Mycoplasma Symptoms: Painful urination, mucus, discharge US reported cases: >10 million Treatment: Antibiotics Complications: Pelvic inflammatory disease (PID), Fetal transmission Nongonococcal urethritis Chlamydia **-- second most common STD in U.S....
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This note was uploaded on 10/03/2011 for the course ISB 202 taught by Professor Johnson during the Spring '08 term at Michigan State University.

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STDsLecture_SPRING_2011[1] - March 24, 2011 STDs- We are...

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