Unit Five - Lecture and Course NotesThe human papillomavirus, trichomoniasis, and Chlamydia account for 88% of all new STI cases among 15-to 24-year-olds (Weinstock, Berman, & Cates, 2004)..STIs in PerspectiveIn the past, the two sexually transmitted infections (STIs)—gonorrhea and syphilis—have typically gotten all the press. Today,AIDS pretty much gets all the attention, and considering the fact that it is fatal this probably not a bad idea. However, if we look at some of the most recent Canadian incidence data collected primarily from Health Canada, we will see that, at least from a numbers perspective, gonorrhea and particularly syphilis should befar less of a concern than should some other infections like HPV and Chlamydia. Your textbook does a good job of describing the various STIs; we will just look at a few of the more common ones here..HPV - Human PapillomavirusHPV or genital warts are other names for human papillomavirus. Itis the most common STI in both Canada and the rest of the world. The best current estimate is that between 20 and 33% of Canadian women have HPV. In some countries, it is thought that as many as half the women have HPV, including half the sexually active teenagers in some US cities. Women are more susceptible to HPV because the cells of the cervix divide very quickly and this facilitates the multiplication of the HPV virus. We don't know
what percentage of men have it, but it could be has high as some ofthe lower estimates for women. Using some of the lower incidence estimates, it is not unreasonable to estimate that as many as 6 million Canadians could have HPV.With HPV you develop warts on your genitals. Some look like typical cauliflower warts and others are more like plantar warts that grow under and into the skin. They can be located anywhere on the genitals, although men are more likely to be diagnosed by visible means because they are more obvious on the penis or scrotum than are internal warts that women sometimes get.HPV is a virus, so there is no cure (unlike bacterial infections like chlamydia, gonorrhea, and syphilis): once you come in contact with the virus, you have it for the rest of your life. However, the warts caused by the virus can be removed with a variety of treatments including liquid nitrogen, laser therapy, and ablative (which means wearing away) creams and gels. The warts are painless, but the treatment can sometimes be painful.