Empowering you with reliable guidance, clear testing options, and practical prevention methods to protect the connections that matter most.
It starts with a simple conversation. ❤️
Your prevention journey starts here
Correct and consistent use of condoms and appropriate barriers plays a key role in prevention.
STIs can be present without any symptoms, so testing matters in the right situations.
Discuss HPV and hepatitis B vaccination with a healthcare professional.
Talk openly with your partner about STI testing and protection.
STI stands for Sexually Transmitted Infection. These infections spread mainly through sexual contact — transmission is possible through vaginal, anal, and oral sex.
Some infections can also be transmitted through infected blood, or from mother to child during pregnancy and childbirth. Understanding how STIs work is the first step toward preventing them.
Vaginal, anal, and oral contact
Infected blood or mother-to-child
Barrier methods & regular testing

An STI can be present without any symptoms.
The absence of symptoms alone can never rule out an STI. Testing is the only reliable way to know.
A quick, judgment-free overview of the most common sexually transmitted infections. Select any card to learn more.
A common bacterial infection. It often causes no obvious symptoms, and effective medical treatment is available.
A bacterial infection. Some people notice discharge or burning during urination, while many have no symptoms.
A bacterial infection that progresses in stages. It may begin with a painless sore that is easy to miss.
A common, curable infection caused by a parasite. Most people who have it are unaware of the infection.
The most common viral STI. Some HPV types can cause genital warts, and certain types are associated with cancers.
A common viral infection that can cause periodic sores. Many people carry HSV without knowing it.
A viral infection that affects the immune system. Modern treatment allows people with HIV to live long, healthy lives.
A viral infection that affects the liver. A safe, effective vaccine has been available for decades.
Transmission varies depending on the type of infection and the kind of exposure.
Unprotected vaginal intercourse can transmit many STIs.
Unprotected anal sex carries a significant transmission risk.
Several infections can be passed through unprotected oral sex.
Infections like HPV and herpes can spread through direct genital skin contact.
Sharing needles or exposure to infected blood can transmit HIV and hepatitis B.
Some infections can pass to a baby during pregnancy, birth, or breastfeeding.
Note: transmission risk differs depending on the type of infection and the nature of the exposure.
These are some symptoms that may appear with an STI — but remember, many infections cause no symptoms at all.
Unusual discharge
Burning or pain while urinating
Genital sores or ulcers
Genital warts or lumps
Itching or irritation
Pelvic or lower abdominal pain
Rash
Fever or general unwellness
NO SYMPTOMS ≠ NO STI
Many STIs can be present without any obvious symptoms. Feeling fine does not confirm that an infection isn't there — testing is the only reliable way to know your status.
Prevention isn't complicated. Four simple habits protect you and the people you care about.
Use condoms and appropriate barrier methods correctly and consistently, every time.
Discuss STI testing with a healthcare professional whenever your situation calls for it.
Check your HPV and hepatitis B vaccination status with a healthcare professional.
Talk openly with your partner about testing, protection, and sexual health.
Inspired by guidance from trusted public-health organizations.
Take an honest look at your situation and any possible exposure.
Use condoms and appropriate barrier methods correctly and consistently.
Discuss recommended vaccinations with a healthcare professional.
Talk to a professional about STI testing or screening when appropriate.
If you have symptoms or a positive test, seek qualified medical advice.
Follow professional guidance on partner notification, evaluation, and treatment.
Condoms and appropriate barrier methods play a major role in protecting against STIs. The key is using them correctly and consistently — every single time.


STIs can be present without symptoms. Testing is the only reliable way to identify an infection — and identifying it early means it can be addressed early.
Which test is needed depends on the infection, symptoms, and possible exposure — a healthcare professional can decide what's right for your situation.
Learn About TestingA blood sample can be used to test for certain infections such as HIV, syphilis, and hepatitis B.
A simple urine sample can detect certain infections, including chlamydia and gonorrhea.
Depending on the situation, a healthcare professional may recommend a swab from the affected area.
Safe and effective vaccines exist for two important infections — HPV and hepatitis B. Checking your vaccination status is one of the simplest steps you can take for long-term protection.
Ask a Healthcare Professional
Protects against certain types of HPV and plays an important role in reducing the risk of HPV-related cancers. It works best when given before exposure.
Provides protection against hepatitis B, a viral infection that affects the liver. It is safe, effective, and widely recommended.
Vaccination recommendations vary by age, vaccination history, and individual circumstances. Always confirm with a healthcare professional.

Open, respectful communication is a powerful part of STI prevention. Here are some simple conversation starters to help begin the discussion:
"When was your last STI test?"
"What kind of protection are we both comfortable with?"
"Have we both checked our vaccination status?"
"If either of us needs testing, how can we plan it together?"
A possible exposure can feel stressful, but there are clear, sensible next steps.

A possible exposure is manageable. Panic doesn't help — a plan does.
Contact a healthcare professional to discuss what happened.
Ask which tests are relevant and when they should be done.
If treatment is prescribed, complete it exactly as directed.
Follow professional guidance about informing partners.
Reach out to a healthcare professional if any of the following apply. Early care leads to better outcomes.

Misinformation spreads faster than infections. Tap each card to reveal the truth.

"If you have an STI, you will definitely have symptoms."
Tap to reveal the fact →Many STIs cause no obvious symptoms at all. Testing is the only reliable way to know your status.
← Tap to flip back"Using a condom gives 100% protection against every STI."
Tap to reveal the fact →Condoms provide strong protection, but some infections can still spread through skin-to-skin contact in areas a condom doesn't cover.
← Tap to flip back"STIs only happen to a certain 'type' of person."
Tap to reveal the fact →STIs can affect anyone who is sexually active. What matters is appropriate prevention and testing — not stereotypes.
← Tap to flip backCheck off what applies to you. This stays entirely on your device — nothing is saved or sent anywhere.
Stored in local state only — never sent anywhere.
Honest answers to the questions people are often too hesitant to ask.
STI stands for Sexually Transmitted Infection — an infection that spreads mainly through sexual contact, including vaginal, anal, and oral sex. Some can also spread through infected blood or from mother to child during pregnancy or birth.
Yes. Many STIs — including chlamydia, gonorrhea, HPV, and HIV — often cause no noticeable symptoms. That's why the absence of symptoms never rules out an infection, and why testing matters.
When used correctly and consistently, condoms are highly effective at reducing the risk of most STIs. They don't offer 100% protection, because some infections spread through skin-to-skin contact in areas a condom doesn't cover.
Consider testing when starting a new relationship, after unprotected sex, after a possible exposure, if you have symptoms, or as part of routine sexual health care. A healthcare professional can advise what's appropriate for your situation.
Stay calm — most STIs are treatable or manageable. Follow your healthcare professional's guidance, complete any prescribed treatment, and follow their advice about informing partners so they can also get checked.
For medical information, always prefer official public-health organizations.
The CDC's STI treatment guidelines provide evidence-based prevention, diagnosis, and treatment guidance for healthcare professionals.
The WHO provides global health information and guidance on STI prevention and sexual health.
A concise, regularly updated fact sheet covering key facts about sexually transmitted infections worldwide.
The WHO's dedicated resource on preventing sexually transmitted infections, including vaccination and barrier methods.
Official WHO information on condoms and their role in preventing STIs and unintended pregnancy.
WHO guidance on STI clinical services, partner notification, and quality care standards for health providers.
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