- [Narrator] Just like any other system, the reproductive system can have disorders, diseases. So we have Sexually Transmitted Diseases, or STDs. They can also be called Sexually Transmitted Infections, or STIs. Now, these are transmitted through sexual contact or traditionally sexual contact: through genital, oral to genital, or anal to genital. You have bacterial sexually transmitted diseases: gonorrhea, syphilis, chlamydia. Then you have some other ones that fall in: yeast, you have protozoan infections, you have arthropod infections. Well, arthropod is lice. So this picture is showing a pubic lice. Those individual long strands you see, those are actually pubic hairs. That organism in the middle is a pubic lice. We have viral STDs: HIV, AIDS, hepatitis B, genital herpes, HPV human papillomavirus. Those are all viral diseases now. The image on the left is a female system showing genital herpes. You can see the redness, the swelling, and a little bit of the secretions coming out. In the middle, figure b, is the male version for genital herpes. You can see the lesions that are forming on the male penis. The far right, oral herpes. That's what cold sores are. So as the fact that the same herpes virus now, but now it's on the oral cavity instead. We've got still the same kind of lesions, the same kind of adhesions there. Now, as far as infections go, this graph is showing from 1986 through 2008. In that time period, you can see how the amount of Gonorrhea has gone down dramatically, the amount of Syphilis has gone down, but the amount of Chlamydia has skyrocketed. From down, back in 1986, maybe 20 people per 100,000 to, up in 2008, to almost 350 people per 100,000. So, for that one particular STD, Chlamydia, the numbers are increasing greatly. This graph is showing the rates of chlamydia infections, in women, broken down by age group. You can notice that the 15-19 age group has the highest rate of infection, followed by the 20-24 age group. So you can notice that really the majority of all chlamydial infections, is from that 15-30 age range. But really, the main part is from 15-24. So, we've all these problems world-wide, Sexually Transmitted Diseases. Well, how do you prevent? First off is knowing your partner, choosing the partner wisely. There needs to be an open communication. Both partners must understand what the other partner has, or doesn't have. Suitable barriers, could be condoms, could be other types or other methods, but preventing transfer of one disease to another person. The idea of getting tested, and if a positive test comes up, being treated for that disorder. And in certain cases, vaccinations can help. Those are all ways of trying to reduce the overall transmission of Sexually Transmitted Diseases.