Perhaps the most controversial area of public health is that associated with sexual health and sexually transmitted diseases. On the one hand, there is an obvious public good is testing for sexually transmitted diseases, taking universal preventive measures where possible, educating people about prevention, making prevention cheap or free and easily available, and insisting that people who acquire such diseases be treated and prevented from spreading the disease. The major dilemmas are that these may come into conflict with either religious beliefs or rights to privacy. For example, if a person has an STD, should that person be "outed" to protect people with whom that person comes into contact? Should Roman Cathoic teens be educated about condom use? Should people be required to be vaccinated and tested?