Of the 28 causes of Stuttering that we have listed, we have the following prevalence/incidence information: 1  1 causes are very common diseases. 2  4 causes are common diseases. 3  1 causes are uncommon diseases. 4  0 causes are rare diseases. 5  0 causes are very rare diseases. 6  27 causes have no prevalence information.
Sexually Transmitted Diseases (STDs): Overview. Sexually transmitted diseases (STDs), also known as sexually transmitted infections (STIs), are typically caused by bacteria or viruses and passed from person to person during sexual contact with the penis, vagina, rectum, or mouth.
Sexually transmitted diseases (STDs) are infections that you can get by having sex or skin-to-skin contact between genitals with someone who has an STD. STDs are also sometimes called sexually transmitted infections or STIs. Whatever you call them, they can cause serious health problems. And they happen a lot to young people: About half of all new infections happen to people ages 15 to 24. There are more than 25 STDs caused by many different bacteria and viruses.