Microbicides

Microbicides:

A) have been associated with genital lesions in the vagina, which can increase vulnerability to HIV infection transmitted during vaginal intercourse.
B) are widely available in the developed world but are not often used due to their significant cost.
C) can be applied to the penis up to six days after intercourse to reduce the risk of an STI.
D) are currently being investigated as a method for women to reduce their risk of an STI, especially if a partner is not willing to use a condom.