Although there are many approaches to preventing sexually transmitted diseases in general (and HIV in particular), current methods have not been sufficient to halt the spread of these diseases (particularly among women and people in less-developed nations). Sexual abstinence is not a realistic option for women who want to bear children, or who are at risk of sexual violence. In such situations, the use of microbicides could offer both primary protection (in the absence of condoms) and secondary protection (if a condom breaks or slips off during intercourse). It is hoped that microbicides may be safe and effective in reducing the risk of HIV transmission during sexual activity with an infected partner.