[High school students and their knowledge about HIV/AIDS: what has changed in ten years?].

An exploratory, descriptive, comparative study with a quantitative approach, whose objective was to compare the knowledge of high school students from two public state schools of Peruíbe, SP, Brazil, about Human Immunodeficiency Virus (HIV) and Acquired Immunodeficiency Syndrome (AIDS), in the years 1999 and 2010. In both of these years, the predominant population studied was female students, under 18 years old, unmarried and white. A statistically significant difference was found with respect to knowledge about HIV/AIDS among the groups studied.

[Differences between female and male adolescents regarding individual vulnerability to HIV].

The objective of this study was to comparatively analyze male and female adolescents' vulnerability to HIV/AIDS, based on their knowledge, values and practices. This is an exploratory-descriptive study, performed using a quantitative approach. The students answered a questionnaire from which relevant questions were selected for the analysis.