HPV can exist outside the area protected by the male condom, so this method is not foolproof. It should be noted that although spermicides may provide some protection against Chlamydia and Gonorrhea , there is no proof that they work against HIV or other sexually transmitted diseases. Experimental Measures . Scientists are pursuing the development of a vaccine against warts caused by HPV, which may, in turn, reduce the incidence of the virus and cancer that may follow. Preliminary trials of the vaccine have shown some success.
More research is needed.
Other experimental drugs include afovirsen, which blocks HPV from using its own genes, and GS504, which may block the virus from replicating. Some studies have suggested possible protective benefits against cervical cancer from certain vitamins. Several researchers have observed an association between high blood levels of vitamins E and C and lower rates of some cancers, including cervical cancers. Folic acid, a B vitamin, prevents birth defects and may also lower the risk for cervical cancer. There is no hard evidence, however, that taking vitamins can prevent any cancer.