A sexually transmitted infection present in a pregnant woman may be passed on to the infant before or after birth. Sexually transmitted infections (stis) if youre worried you have got an sti, go for a check-up at a sexual health clinic as soon as you can. Dont have sex, including oral sex, without a condom until you have had a check-up. sexually transmitted infections (stis) usually spread through sexual contact. Here, learn how to recognize, treat, and prevent some common stis. sexually transmitted infections (stis) are diseases that spread by means of sexual contact. About half of the 100 new stis identified are reported in adolescents and young people below 24 years. Stis can be very dangerous and take a toll on the health of young people. Lopez phd, in human reproductive biology (fourth edition), 2014. Sexually transmitted diseases (stds), also called sexually transmitted infections (stis), are transmitted from one person to another during coitus or other sexual contact. They are sometimes called venereal diseases, after venus, the roman goddess of love. the term sexually transmitted disease (std) is used to refer to a condition thats passed from one person to another through sexual contact. Practicing sex without protection with multiple sexual partners also puts you at a high risk of contracting sexually transmitted diseases. Condoms are still the only known and proven birth control method that protects against sexually transmitted infections and std. If you have pubic lice, we recommend that you have routine tests for all sexually transmitted infections (stis), including chlamydia, gonorrhoea, syphilis and hiv. Stds in men cause no symptoms or symptoms like genital burning, itching, sores, rashes, or discharge. Pubic lice, or crabs, are small parasites found in the pubic hair called phthirus pubis. Pubic lice are spread by direct skin-to-skin contact including during sexual activity, and contact with towels, underclothing or bedding of an infected person.