Hispanics make up less than 10% of the U.S. population but account for 83,923 (17%) of all U.S AIDS cases and are disproportionately affected by sexually transmitted diseases (STDs). Nurses have a mandate to provide culturally competent care, but to do so, they must understand what their clients' needs are and how best to deliver nursing care. A key finding of this exploratory focus group study with newly immigrated Mexican Americans in North Carolina was that respondents were actively striving to prevent HIV or STDs. Their preventive practices for both HIV and STDs centered around a "gonorrhea model" of prevention and casual transmission. The emphasis was not on the biomedical model of transmission or prevention (condoms use). The findings also suggested that the level of counseling for prevention needs to be targeted differently for men than for women.