Interactive quiz
STD Myths vs Facts
Toilet seats, oral sex, the pill, double condoms, HIV, PrEP, how much do you actually know? Take the quick myth-or-fact quiz for an instant, CDC-grounded answer to each, or scroll down and read the whole library. It all runs in your browser.
Myth-or-fact quiz
The library
Every myth & fact, explained
The 13 statements from the quiz, with the CDC-grounded answer to each. 8 are myths; the rest are true.
- Myth
“You'd know if you had an STD, they always cause symptoms.”
Most STIs are frequently symptom-free. Chlamydia, gonorrhea, HPV, and even HIV can be silent for months or years, so you can have one, and pass it on, while feeling completely fine. That's exactly why testing beats waiting for symptoms.
- Fact
“You can get an STD from oral sex.”
Yes: oral sex can transmit gonorrhea (throat gonorrhea is common and usually silent), chlamydia, syphilis, herpes, and HPV, with a lower risk of HIV and hepatitis B. If you have oral sex, ask for a throat swab when you test; condoms and dental dams lower the risk.
- Myth
“You can catch an STD from a toilet seat, towel, or hot tub.”
A myth, full stop. The organisms that cause STIs don't survive on surfaces and aren't spread by casual contact: toilet seats, towels, pools, hot tubs, shared drinks, or handshakes. STIs pass through sexual contact and skin-to-skin genital contact, not everyday objects.
- Myth
“Birth control pills protect you against STDs.”
The pill (and the patch, ring, shot, and IUD) prevent pregnancy, they do nothing against STIs. Only barrier methods like condoms reduce STI transmission. If you rely on hormonal birth control, add condoms to protect against infections.
- Myth
“Wearing two condoms is safer than one.”
The opposite, 'double-bagging' creates friction between the two condoms that makes both more likely to tear. Use one condom, correctly, every time. The same goes for pairing an external and internal condom: one at a time.
- Fact
“You can catch the same STD again after being treated.”
True. Curing an STI doesn't make you immune. Chlamydia, gonorrhea, syphilis, and trichomoniasis can all come back, most often when a partner wasn't treated at the same time. That's why partners are treated together and you retest, usually around 3 months later.
- Fact
“Someone with no symptoms can still pass an STD to a partner.”
True, and it's the crux of why STIs spread. Because most infections are silent, people transmit them without knowing. Feeling fine isn't proof you're clear, only a test is.
- Fact
“With treatment, a person with HIV can live a long life and not pass it on.”
True. Modern HIV treatment lets people live a normal lifespan, and someone with an undetectable viral load cannot transmit HIV sexually, that's 'U=U' (Undetectable = Untransmittable). HIV is a manageable chronic condition, not the death sentence it was decades ago.
- Fact
“You can get an STD from genital skin-to-skin contact, without penetration.”
True. Herpes, HPV, syphilis (from a sore), molluscum contagiosum, and pubic lice can all pass through skin-to-skin genital contact, grinding, or rubbing, even with no penetration and sometimes no visible symptoms. Condoms help but can't cover all the skin involved.
- Myth
“Only people with lots of partners get STDs.”
A myth that keeps people from testing. It takes exactly one partner and one exposure. STIs don't care about your number of partners, your relationship status, or how 'careful' you seem, anyone who's sexually active can get one.
- Myth
“If you're on PrEP, you're protected from all STDs.”
PrEP is highly effective, but only against HIV. It does nothing for chlamydia, gonorrhea, syphilis, herpes, or HPV. If you're on PrEP, keep testing for other STIs (every 3 months is standard) and consider condoms and doxy-PEP.
- Myth
“A routine Pap smear also screens you for STDs.”
A common mix-up. A Pap tests the cervix for abnormal cells (and sometimes HPV) to catch cervical cancer early, it is not an STI panel. Chlamydia, gonorrhea, HIV, syphilis, and the rest need their own tests, which aren't done automatically at a Pap unless you ask.
- Myth
“Condoms remove all risk of every STD.”
Condoms are excellent and sharply cut the risk of the fluid-borne STIs (HIV, chlamydia, gonorrhea): but they can't cover every bit of skin, so the skin-to-skin infections (herpes, HPV, syphilis sores) can still pass. 'Lower risk' isn't 'no risk'; pair condoms with vaccines, PrEP, and regular testing.
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Put the facts to work
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Where this comes from
Every answer follows the CDC's guidance on how STIs spread, present, and are prevented. We don't reinterpret it. For a deeper dive on the biggest one, read our guide to the myths about HIV and AIDS.
Medically Reviewed & Fact-Checked · Updated
Reviewed by EasySTD Editorial Team
Compiled and checked by EasySTD's editorial team against CDC and public-health sources. This is educational information, not a substitute for advice from a licensed clinician. Our editorial guidelines →
3 Sources
Data & references
- CDC: About Sexually Transmitted Infectionshttps://www.cdc.gov/sti/about/index.html
- CDC: STI Preventionhttps://www.cdc.gov/sti/prevention/index.html
- CDC: HIV Prevention & U=Uhttps://www.cdc.gov/hiv/basics/prevention.html
EasySTD is an information and comparison directory, not a healthcare provider. This quiz is general educational information, not a diagnosis or medical advice, and does not create a doctor-patient relationship. Only testing can tell you your status.
Good to Know
STD myths vs facts: frequently asked questions
The toilet-seat myth, silent infections, birth control, and whether HIV is still a death sentence.
Can you really not get an STD from a toilet seat?
Correct, you can't. It's one of the most persistent myths. The bacteria and viruses that cause STIs don't survive on hard surfaces and aren't transmitted by casual contact, so toilet seats, towels, pools, hot tubs, shared drinks, and handshakes pose no risk. STIs spread through sexual contact and skin-to-skin genital contact.
Do you always get symptoms if you have an STD?
No, and this is the single most important myth to unlearn. Most STIs, chlamydia, gonorrhea, HPV, often HIV and syphilis, are frequently symptom-free, sometimes for years. You can carry and transmit an infection while feeling perfectly healthy, which is why routine testing, not symptom-watching, is how you actually know your status.
Does the pill or an IUD protect against STDs?
No. Hormonal and long-acting birth control, the pill, patch, ring, shot, implant, and IUD, prevent pregnancy but offer zero protection against STIs. Only barrier methods like external and internal condoms reduce STI transmission, so pair them with your birth control if STI protection matters.
Is HIV still a death sentence?
No. With today's antiretroviral treatment, people with HIV live long, healthy lives, and someone who reaches an undetectable viral load cannot transmit HIV to sexual partners, the science summarized as U=U (Undetectable = Untransmittable). HIV is now a manageable chronic condition, and PrEP can prevent it in the first place.
Is this quiz medical advice?
No. It's an educational, CDC-grounded knowledge check to bust common misconceptions, it can't tell you whether you have an infection. Only a clinician and a test can do that. Use it to learn what's true, then test at the right time if you've had a possible exposure.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.