Unprotected sex may lead to pregnancy, sexually transmitted disease or fear of them. As many as one out of five travelers have temporary sexual contacts, half of them unprotected, enabling the spread of resistant strains of micro-organisms or venereal diseases that have become rare in home country. Upon seeking medical care after an unprotected sexual contact, the person's infection risk should be evaluated and laboratory tests scheduled, taking the incubation times of various diseases into consideration. If contraception has not been secured, postcoital contraception should be offered.