To evaluate the effect of an internet-based educational intervention to increase knowledge of sexually transmitted infections (STIs), attitudes and self-efficacy toward consistent condom use in Mexican adolescents. A field trial with an intervention and control group was conducted in 14- to 15-year-old students in two secondary schools. The…

Sexually transmitted infections and unplanned pregnancy among adolescents are important public health issues that can be tackled through the implementation of effective education strategies. Previous studies have documented the importance and effectiveness of parents as primary educators for their adolescents. A qualitative study based on grounded…

While condoms are an effective defense against the transmission of HIV, large numbers of sex workers are not using them. We argue that some sex workers are willing to take the risk because clients are willing to pay more to avoid using condoms. Using data from Mexico, we estimate that sex workers received a 23 percent premium for unprotected sex.…

The Fifteenth International Congress on Hygiene and Demography, held in Washington City in the autumn of 1912, was a notable event in the history of sanitation and in the discussion of the conditions of the physical and mental health of the people. The exhibition held in connection with the congress was instructive in many ways, and contained much…