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en-wikipedia-org-8372		Sexually transmitted infection - Wikipedia			.html	text/html	10441	1550	63	The most effective way to prevent STIs is to not have sex.[2] Some vaccinations may also decrease the risk of certain infections including hepatitis B and some types of HPV.[2] Safe sex practices, such as use of condoms, having a smaller number of sexual partners, and being in a relationship in which each person only has sex with the other also decreases the risk of STIs.[1][2] Circumcision in adult males may be effective to prevent some infections.[1] During school, comprehensive sex education may also be useful.[9] Most STIs are treatable or curable; of the most common infections, syphilis, gonorrhea, chlamydia, and trichomoniasis are curable, while herpes, hepatitis B, HIV/AIDS, and HPV are treatable but not curable.[1] Resistance to certain antibiotics is developing among some organisms such as gonorrhea.[10]	./cache/en-wikipedia-org-8372.html	./txt/en-wikipedia-org-8372.txt