This calculator provides a simplified, non-diagnostic assessment of potential risks related to HIV exposure based on reported behaviors. It is NOT a substitute for professional medical advice or testing.
None
1-5 Times
6-10 Times
More than 10 Times
None
1-5 Times
6-10 Times
More than 10 Times
None
1-2 New Partners
3-5 New Partners
More than 5 New Partners
No
Yes
No
Yes
No known partners with HIV+
Known partners with HIV+
Unknown partner status, but practiced unsafe sex
Understanding HIV Transmission and Risk Factors
Human Immunodeficiency Virus (HIV) is a virus that attacks the body's immune system. If left untreated, it can lead to Acquired Immunodeficiency Syndrome (AIDS). Understanding how HIV is transmitted and the factors that increase risk is crucial for prevention and informed decision-making about sexual health.
HIV is primarily transmitted through specific bodily fluids: blood, semen, pre-seminal fluid, rectal fluids, vaginal fluids, and breast milk. Transmission can occur through unprotected sexual contact (vaginal, anal, or oral sex), sharing needles or syringes, or from mother to child during pregnancy, birth, or breastfeeding.
This calculator aims to provide a simplified risk assessment based on common behavioral factors. It's important to remember that this tool does not provide a diagnosis and is not a substitute for medical advice or an HIV test. The "risk" presented is a probabilistic estimation based on general data and does not account for all individual circumstances or the effectiveness of prevention methods like PrEP (Pre-Exposure Prophylaxis) or consistent condom use.
How the Calculator Works:
The calculator assigns a risk value to different behaviors based on their general association with HIV transmission. These values are additive, meaning engaging in multiple higher-risk behaviors will increase the overall calculated risk score.
Unprotected Anal Sex: This is considered the highest risk sexual activity for HIV transmission due to the fragile lining of the rectum, which is more susceptible to the virus.
Unprotected Vaginal Sex: While generally lower risk than unprotected anal sex, vaginal sex without protection still poses a significant risk.
Multiple Sex Partners: Having more partners, especially new or anonymous partners, increases the probability of encountering someone with HIV.
Sharing Needles/Syringes: This is a very high-risk behavior as it involves direct blood-to-blood contact.
Recent STI Diagnosis: Having a Sexually Transmitted Infection (STI) can increase the risk of HIV infection because STIs can cause inflammation and open sores, making it easier for the virus to enter the body.
Partner's HIV Status: Having sex with a partner who is HIV positive, especially without using protection or if they have a detectable viral load, significantly increases risk.
Important Disclaimer: This calculator uses simplified risk factors for illustrative purposes. Actual HIV risk is complex and depends on many factors, including viral load of an infected partner, type of sexual act, condom use effectiveness, presence of other STIs, and whether prevention methods like PrEP or PEP (Post-Exposure Prophylaxis) are used.
Recommendations:
Get Tested Regularly: The most accurate way to know your HIV status is to get tested. Discuss testing frequency with your healthcare provider.
Practice Safer Sex: Consistently use condoms correctly for vaginal, anal, and oral sex.
Consider PrEP/PEP: Talk to your doctor about Pre-Exposure Prophylaxis (PrEP) if you are at high risk, or Post-Exposure Prophylaxis (PEP) if you think you've been exposed.
Avoid Sharing Needles: Never share needles or syringes for drug use, tattooing, or piercing.
Communicate with Partners: Open communication about sexual health and HIV status with partners is essential.
For accurate medical advice and testing, please consult a healthcare professional or visit a local sexual health clinic.
function calculateRisk() {
var unprotectedAnalSexRisk = parseFloat(document.getElementById("unprotectedAnalSex").value) || 0;
var unprotectedVaginalSexRisk = parseFloat(document.getElementById("unprotectedVaginalSex").value) || 0;
var multiplePartnersRisk = parseFloat(document.getElementById("multiplePartners").value) || 0;
var sharingNeedlesRisk = parseFloat(document.getElementById("sharingNeedles").value) || 0;
var stdDiagnosisRisk = parseFloat(document.getElementById("stdDiagnosis").value) || 0;
var hivStatusPartnerRisk = parseFloat(document.getElementById("hivStatusPartner").value) || 0;
var totalRiskScore = unprotectedAnalSexRisk + unprotectedVaginalSexRisk + multiplePartnersRisk + sharingNeedlesRisk + stdDiagnosisRisk + hivStatusPartnerRisk;
var resultElement = document.getElementById("result");
var resultText = "";
if (isNaN(totalRiskScore) || totalRiskScore < 0) {
resultText = "Invalid input. Please ensure all fields are correctly selected.";
} else {
var riskLevel = "";
var explanation = "";
if (totalRiskScore === 0) {
riskLevel = "Very Low Risk";
explanation = "Based on the information provided, your calculated risk score is very low. However, no method is 100% foolproof. Regular testing and safe practices are always recommended.";
} else if (totalRiskScore < 0.1) {
riskLevel = "Low Risk";
explanation = "Your calculated risk score is low. Engaging in safer practices and regular testing can further minimize risk.";
} else if (totalRiskScore < 0.3) {
riskLevel = "Moderate Risk";
explanation = "Your calculated risk score indicates a moderate level of potential exposure. It is highly recommended to discuss prevention strategies like consistent condom use, PrEP, and regular HIV testing with a healthcare provider.";
} else if (totalRiskScore < 0.6) {
riskLevel = "High Risk";
explanation = "Your calculated risk score is high. It is strongly advised to seek immediate medical consultation to discuss risk reduction strategies, including PrEP and PEP, and to undergo HIV testing.";
} else {
riskLevel = "Very High Risk";
explanation = "Your calculated risk score is very high. Please consult a healthcare professional immediately to discuss urgent risk reduction measures, HIV testing, and available prevention options like PrEP and PEP.";
}
resultText = "Your Assessed Risk: " + riskLevel + "" + explanation;
}
resultElement.innerHTML = resultText;
}