||Did you see the Part I of this lecture?
Although other methods of contraception may provide
the same level or better protection against pregnancy, they provide little, if any
protection against HIV and STDs. Although spermicides may have activity against gonorrhea
and chlamydia and have demonstrated activity against HIV in the laboratory, their use,
particularly if frequent, has been associated with an increase in mucosal irritation and
even genital ulcers. A recent clinical trial conducted by UNAIDS in Africa and Thailand
among sex workers with an average of over three partners per day found significantly
increased rates of HIV seroconversion in nonoxynol-9 users as compared to placebo.