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Sexually Transmitted Infections (STIs) - NHS Choices
Sexually transmitted infections (STIs) are passed on from one person to another through unprotected sex or genital contact.
http://www.nhs.uk/conditions/sexually-transmitted-infections/Pages/Introduction.aspx
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Sexually Transmitted Diseases - Information from CDC
Information, statistics, and treatment guidelines for sexually transmitted diseases (STD) from CDC's Division of STD Prevention.
http://www.cdc.gov/std/
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WHO: Sexually Transmitted Infections
Sexually transmitted infections: WHO health topic page on sexually transmitted infections provides links to descriptions of activities, reports, publications, statistics, news, multimedia and events, as well as contacts and cooperating partners in the various WHO programmes and offices working on this topic.
http://www.who.int/topics/sexually_transmitted_infections/en/
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Sexually Transmitted Infection - Wikipedia, the Free Encyclopedia
Wikipedia's information about Sexually transmitted infections.
https://en.wikipedia.org/wiki/Sexually_transmitted_infection
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Sexually Transmitted Infections (STI) - Avert
Using a condom for all types of sex is the best way to avoid STIs and HIV. Vaccines can prevent certain STIs like genital warts and hepatitis B. Reducing the number of sexual partners you have and not mixing alcohol, drugs and sex also means you're less likely to get infected.
http://www.avert.org/sex-stis/sexually-transmitted-infections
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Planned Parenthood: STDs
There are many kinds of sexually transmitted diseases and infections. And they are very common - more than half of all of us will get one at some time in our lives. Use the list above to find out about each kind of STD.
https://www.plannedparenthood.org/learn/stds-hiv-safer-sex
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Womenshealth: Sexually Transmitted Infections
STIs are also called sexually transmitted diseases, or STDs. STIs are usually spread by having vaginal, oral, or anal sex. More than 9 million women in the United States are diagnosed with an STI each year.1 Women often have more serious health problems from STIs than men, including infertility.
http://www.womenshealth.gov/publications/our-publications/fact-sheet/sexually-transmitted-infections.html
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STD symptoms: Common STDs and Their Symptoms - Mayo Clinic
A list of common and possible STD symptoms and potential causes.
http://www.mayoclinic.org/diseases-conditions/sexually-transmitted-diseases-stds/in-depth/std-symptoms/art-20047081
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Sexually Transmitted Diseases - MedlinePlus
Sexually Transmitted Diseases information.
https://www.nlm.nih.gov/medlineplus/sexuallytransmitteddiseases.html
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Sexually Transmitted Infections - Healthdirect
Even if there are no signs and symptoms they can still develop complications or pass on the infection to others. Often the only way to know whether you have an STI is to get tested.
http://www.healthdirect.gov.au/sexually-transmitted-infections-sti
