Failing to disclose an STD before sex can be illegal, and in many states it can result in felony criminal charges. Whether it actually is illegal depends on which STD you have, which state you live in, and the specific circumstances of the encounter.
The law treats HIV very differently from herpes, and herpes very differently from chlamydia. Most people assume all STDs are covered by the same legal obligation. They are not. HIV carries specific criminal exposure statutes in the majority of U.S. states. Other STDs are typically covered by broader communicable disease or sexual fraud laws that are harder to prosecute.
This guide covers every legal dimension of the question in 2026. You will learn which STDs trigger criminal obligations, what the state-by-state penalty ranges look like, when civil lawsuits are available, and what defenses exist including condom use.
The legal reality here is more specific than most people expect.
Is It Illegal to Not Disclose an STD?
Failing to disclose an STD is illegal in many U.S. states, but the specific law that applies depends heavily on which STD is involved and your state’s statutory framework. There is no single federal law that mandates STD disclosure before sex.
The legal framework operates on two tracks: criminal law and civil law. On the criminal side, most states have statutes specifically targeting HIV exposure or transmission without disclosure. A smaller number of states have broader communicable disease statutes that cover other serious STDs. On the civil side, a person who contracts an STD from a non-disclosing partner can potentially sue for battery, fraud, or negligence regardless of whether a criminal law was violated.
The distinction matters enormously. In a state with an HIV-specific criminal statute, failing to disclose HIV before sex can result in a felony charge even if no transmission occurs. Failing to disclose herpes in the same state might have no criminal consequence at all, though a civil lawsuit remains possible.
Quick Legal Framework:
- Federal law requiring STD disclosure: Does not exist
- HIV-specific criminal statutes: Exist in most states
- General communicable disease criminal laws: Exist in some states
- Civil liability for non-disclosure: Available in most states regardless of criminal law
- Prosecution requires: Knowledge of infection, failure to disclose, and varying levels of intent depending on state
The legal obligation to disclose varies by disease, by state, and by the specific circumstances of each sexual encounter.
Do You Have to Disclose an STD to a Sexual Partner?
Whether you are legally required to disclose an STD to a sexual partner depends on your state’s law and which STD you have. In most states, you have a legal obligation to disclose HIV before sexual contact that creates a risk of transmission. The legal obligation for other STDs is less consistent and often arises through civil law rather than criminal law.
The moral expectation of disclosure is universal. The legal mandate is not. States like California, Texas, Florida, and Illinois have criminal statutes that specifically address HIV disclosure or exposure. Those statutes create a clear legal duty. States without such statutes may still hold non-disclosing partners civilly liable, but the criminal pathway is less certain.
The reasonable inference from most state public health laws is that people with known infections have at least a civil duty to prevent transmission. Whether that civil duty is enforced through criminal prosecution or civil litigation varies dramatically by jurisdiction and by the specific disease.
Legal Disclosure Obligation by STD Type:
| STD | Criminal Law Obligation in Most States | Civil Liability Risk |
|---|---|---|
| HIV | Yes, specific criminal statutes in most states | Yes, significant |
| Herpes (HSV-1, HSV-2) | Rarely covered by specific criminal statute | Yes, civil battery and fraud claims |
| Chlamydia | No specific criminal statute in most states | Possible but difficult to prove |
| Gonorrhea | No specific criminal statute in most states | Possible but difficult to prove |
| Syphilis | Some states include in communicable disease statutes | Yes |
| HPV | No specific criminal statute anywhere | Possible but rarely successful |
| Hepatitis B or C | Some states include in communicable disease statutes | Yes |
The clearest legal obligation applies to HIV. For everything else, the legal picture is murkier, with civil liability being the more realistic enforcement mechanism.
Is It Illegal to Have Sex Without Disclosing an STD?
Having sex without disclosing an STD is illegal in most states when the STD is HIV, and it can be illegal in some states for other serious communicable diseases depending on how broadly the state’s exposure statute is written.
The act that creates criminal liability is not the sex itself. It is the combination of knowing you have a transmissible infection, failing to disclose it, and engaging in sexual activity that creates a risk of transmission. All three elements typically need to be present for a criminal charge to succeed.
States like Iowa, Texas, and Virginia have broad enough STD or communicable disease exposure statutes that non-HIV STDs could theoretically support criminal charges. Iowa Code Chapter 709C creates a specific criminal exposure offense for HIV but also references other serious diseases. Texas Health and Safety Code 81.002 defines reportable diseases in ways that can extend criminal liability beyond HIV in some prosecutorial interpretations.
Elements Required for Criminal Liability for STD Non-Disclosure:
- Knowledge that you have the infection at the time of sexual contact
- Failure to inform the partner before sexual contact occurs
- Engaging in conduct that creates a risk of transmission
- In some states: actual transmission to the partner
- In some states: intent to transmit or reckless disregard for transmission risk
The knowledge element is critical. A person who did not know they were infected cannot be criminally liable for non-disclosure. The law targets knowing concealment, not innocent ignorance.
Key Takeaway: Having sex without disclosing an STD is illegal in most states for HIV and may be illegal for other serious communicable diseases depending on state law. The criminal charge requires knowledge of the infection, failure to disclose, and sexual conduct creating transmission risk.
What STDs Are You Legally Required to Disclose?
HIV is the STD most consistently required to be disclosed under criminal law across U.S. states. Beyond HIV, the legal disclosure requirement varies significantly by state and by the nature of the disease.
Most state HIV criminalization statutes focus specifically on HIV because of its historical severity, its transmissibility, and the specific public health policy decisions made during the AIDS crisis of the 1980s and 1990s. Those statutes were written when HIV was a near-certain death sentence. Many remain on the books in their original form even as HIV treatment has dramatically changed the disease’s prognosis.
Some states have broader communicable disease statutes that extend legal obligations beyond HIV. These statutes typically cover diseases that are reportable to public health authorities. Syphilis, gonorrhea, chlamydia, hepatitis B, and hepatitis C are all reportable diseases in every state. Whether failing to disclose them to a sexual partner triggers criminal liability depends on how each state’s statute is written.
Reportable STDs and Disclosure Obligation Status:
| STD | Reportable Disease? | Specific Criminal Disclosure Law? | Civil Liability Risk |
|---|---|---|---|
| HIV | Yes | Yes, in most states | High |
| Syphilis | Yes | In some states (broader statutes) | Moderate |
| Gonorrhea | Yes | Rarely | Moderate |
| Chlamydia | Yes | Rarely | Low to moderate |
| Herpes (HSV-2) | No (not reportable) | No specific statute in most states | Moderate |
| Hepatitis B | Yes | In some states | Moderate |
| HPV | No (not reportable) | No | Low |
The reporting obligation to public health authorities is separate from and does not automatically create a legal disclosure duty to sexual partners. But states that criminalize exposure to reportable diseases often use the reportable disease list as the scope of their criminal statute.
Is It Illegal to Not Tell Someone You Have HIV?
Yes, failing to disclose HIV to a sexual partner before sex that creates a transmission risk is a criminal offense in the majority of U.S. states. HIV-specific criminalization statutes exist in more than 35 states, making this one of the most consistently criminalized public health behaviors in American law.
The criminal charge under most state HIV exposure statutes does not require actual transmission of the virus. The offense is complete when a person who knows they are HIV-positive engages in sexual activity with another person without prior disclosure. Transmission is typically a sentencing factor rather than an element of the crime itself.
California Health and Safety Code Section 120291 makes it a felony to willfully expose another person to HIV through unprotected sexual activity when the person knew they were HIV-positive at the time. Texas Health and Safety Code Section 81.102 creates a similar offense. Florida Statute 384.24 criminalizes the knowing exposure of another to a sexually transmissible disease, which includes HIV.
HIV Non-Disclosure Criminal Laws: Key States:
| State | Statute | Charge Level | Key Requirement |
|---|---|---|---|
| California | Health & Safety Code 120291 | Felony | Willful exposure without disclosure |
| Texas | Health & Safety Code 81.102 | Felony | Knowing exposure with intent to infect |
| Florida | Statute 384.24 | Felony | Knowing exposure, reasonable belief of transmission risk |
| Iowa | Code 709C.1 | Class B Felony | Knowing exposure regardless of transmission |
| Illinois | 720 ILCS 5/12-5.01 | Class 2 Felony | Knowing exposure without disclosure |
| New York | Public Health Law 2307 | Misdemeanor | Knowing exposure of another to a venereal disease |
The wide variation in charge levels and specific requirements reflects the different policy approaches taken by states over time. Some states are felony-first jurisdictions. Others treat first-time offenses as misdemeanors. Recent reform efforts have changed some of these laws.
Is Not Disclosing HIV a Felony?
Not disclosing HIV is a felony in most states that have HIV-specific criminal exposure statutes, though the charge level and penalty range vary significantly. In some states, it is a misdemeanor, and in a growing number of states, recent reforms have reduced the severity of the charge or required actual transmission for felony-level prosecution.
The felony classification was established in most states during the late 1980s and 1990s when HIV was uniformly fatal and no effective treatment existed. Many of those original statutes remain largely unchanged. States like Iowa initially had Class B felony penalties for HIV exposure that carried sentences of up to 25 years in prison. Iowa reformed its law in 2023, but the underlying structure remained punitive.
California reduced its HIV non-disclosure offense from a felony to a misdemeanor under SB 239, signed in 2017. The law also updated the statute to require knowing transmission rather than mere exposure as the basis for any criminal charge. This was a significant reform that other states have used as a model.
HIV Non-Disclosure Felony vs. Misdemeanor Status by State:
| State | Felony or Misdemeanor | Maximum Sentence | Reform Status |
|---|---|---|---|
| Iowa | Felony (reformed 2023) | Up to 25 years (pre-reform); reduced post-reform | Reformed |
| Texas | Felony | Up to 10 years | No recent reform |
| Florida | Felony | Up to 5 years | No recent reform |
| California | Misdemeanor (since 2017) | Up to 6 months | Reformed SB 239 (2017) |
| New York | Misdemeanor | Up to 1 year | Under review |
| Illinois | Class 2 Felony | 3 to 7 years | No recent reform |
The trend in 2026 is toward modernization and reform, with states increasingly requiring actual transmission or intentional conduct for felony-level charges rather than merely knowing exposure without disclosure.
HIV Criminalization Laws by State
HIV criminalization laws exist in over 35 U.S. states in some form, though the specific structure, elements, and penalties vary widely. Understanding the difference between states matters enormously because the same conduct can be a misdemeanor in one state and a 10-year felony in another.
States fall into three broad categories. The first category includes states with dedicated HIV-specific criminal exposure statutes that operate independently of general criminal law. The second category includes states that criminalize HIV exposure through general communicable disease statutes rather than HIV-specific laws. The third category includes states that rely entirely on general criminal law theories such as assault, reckless endangerment, or fraud rather than disease-specific statutes.
The HIV Justice Network and similar organizations track these laws and their reform status. As of 2026, states including California, Colorado, Illinois (partially), and Iowa have enacted meaningful reforms. States including Texas, Florida, Georgia, and North Carolina retain older, more punitive frameworks.
HIV Criminalization Law Framework by State:
| State | Law Type | Transmission Required? | Reform Status |
|---|---|---|---|
| California | Disease-specific statute | Yes (post-2017 reform) | Reformed |
| Texas | Disease-specific statute | No | Unreformed |
| Florida | General STD statute | No | Unreformed |
| Iowa | Disease-specific statute | No (reformed 2023 to require intent) | Partially reformed |
| Colorado | Reformed statute | No, but intent required | Reformed (2022) |
| Georgia | Disease-specific statute | No | Unreformed |
| New York | General communicable disease law | No, but intent required | Under review |
| Virginia | Disease-specific statute | No | Unreformed |
The practical effect of “transmission required” versus “exposure only” is enormous. In transmission-required states, a person who uses protection and does not transmit HIV faces no criminal liability even if they did not disclose. In exposure-only states, the failure to disclose alone, combined with sexual activity, completes the crime.
Key Takeaway: HIV non-disclosure is a felony in most unreformed states. Post-2017, California and Colorado have been leaders in reform, shifting toward requiring actual transmission or proven intent before criminal charges apply.
Penalty for Not Disclosing HIV
The penalty for not disclosing HIV ranges from six months in jail in reformed states like California to up to 25 years in prison in states that retain older, unreformed felony statutes. The variation is one of the most extreme in any area of U.S. criminal law.
In Texas, a conviction under Health and Safety Code Section 81.102 can result in a second-degree felony carrying two to 20 years in state prison. The statute applies when a person knowingly donates or offers to donate blood, blood plasma, semen, or tissue or engages in sexual intercourse or other intimate contact with another person, knowing they are infected with HIV and with intent to infect.
In Florida, violation of Statute 384.24 is a third-degree felony carrying up to five years in state prison and a $5,000 fine. Florida’s statute is broader than most and applies to any sexually transmissible disease, not just HIV. A knowing exposure without disclosure to any partner satisfies the statute’s elements.
HIV Non-Disclosure Penalties by State:
| State | Charge Level | Maximum Prison Sentence | Fine |
|---|---|---|---|
| Texas | Second-degree Felony | 20 years | Specific penalties have not been publicly confirmed |
| Iowa | Class B Felony (pre-reform) | 25 years | Specific penalties have not been publicly confirmed |
| Florida | Third-degree Felony | 5 years | Up to $5,000 |
| Illinois | Class 2 Felony | 7 years | Up to $25,000 |
| California | Misdemeanor (post-2017) | 6 months | Up to $1,000 |
| New York | Misdemeanor | 1 year | Specific penalties have not been publicly confirmed |
These are statutory maximums. Actual sentences depend on criminal history, specific facts, and prosecutorial discretion. First-time offenders without prior records rarely receive maximum sentences, but the felony conviction itself carries lasting consequences regardless of the specific sentence imposed.
Is It Illegal to Not Tell Someone You Have Herpes?
Failing to disclose herpes to a sexual partner is not specifically criminalized by any U.S. state’s criminal statute as of 2026. There is no state in the country with a “herpes disclosure” criminal law. The criminal framework that exists for HIV does not apply to herpes.
This is one of the most significant legal distinctions that top results consistently fail to explain clearly. Herpes is not a reportable disease in most states. It is not covered by HIV-specific criminal exposure statutes. General communicable disease statutes in most states were not written to cover herpes specifically.
The legal consequence for herpes non-disclosure is almost entirely civil rather than criminal. A person who knowingly had herpes, did not disclose it, and transmitted it to a partner can face a civil lawsuit for battery, fraudulent concealment, or negligence. Civil cases for herpes transmission have been successfully prosecuted, and damages in those cases have ranged from tens of thousands to hundreds of thousands of dollars in documented U.S. court decisions.
Herpes Non-Disclosure: Legal Risk Summary:
- Specific criminal statute in any state: None
- General criminal law theory applicable: Possible in some states under assault or fraud theories, but rarely prosecuted
- Civil battery claim: Yes, available if knowledge and non-disclosure are proven
- Civil fraudulent concealment claim: Yes, if the infected person actively misrepresented their status
- Civil negligence claim: Yes, if the infected person failed to take reasonable precautions
- Realistic civil damages: $10,000 to $500,000 depending on facts and jurisdiction
The absence of criminal liability does not mean herpes non-disclosure is legally consequence-free. The civil track is active, and jury sympathy toward plaintiffs in these cases can result in significant awards.
Is It Illegal to Not Tell Someone You Have Chlamydia?
Failing to disclose chlamydia to a sexual partner is not specifically criminalized in any U.S. state. While chlamydia is a reportable sexually transmitted infection in all 50 states, the legal reporting obligation runs to public health authorities, not to sexual partners.
Chlamydia is highly treatable with antibiotics and is not typically associated with the same public health urgency that drove the criminalization of HIV. No state has enacted a chlamydia-specific criminal exposure statute. General communicable disease statutes in states like Florida that cover all sexually transmissible diseases could theoretically apply to chlamydia, but documented prosecutions for chlamydia non-disclosure are essentially nonexistent.
Civil liability for chlamydia transmission without disclosure is theoretically available under the same negligence and battery frameworks that apply to herpes. In practice, these cases rarely proceed because chlamydia’s treatability and the difficulty of proving the source of transmission make them poor candidates for civil litigation.
Chlamydia Non-Disclosure: Legal Reality Check:
- Specific criminal statute: None in any state
- General communicable disease statute coverage: Theoretically possible in Florida and some states, but no documented prosecutions
- Civil lawsuit availability: Yes, theoretically, but rarely pursued
- Practical prosecution risk: Very low
- Reportable to public health: Yes, in all 50 states (by healthcare providers, not individuals)
The practical legal risk of not disclosing chlamydia is minimal compared to HIV, but the ethical obligation remains real regardless of the legal framework.
Key Takeaway: HIV non-disclosure carries criminal penalties in most states. Herpes and chlamydia non-disclosure are not specifically criminalized anywhere, though civil lawsuits for herpes transmission have succeeded in U.S. courts and can result in substantial damages.
Criminal Charges for STD Transmission
Criminal charges for STD transmission are most commonly filed under HIV-specific exposure statutes, but general criminal theories including assault, reckless endangerment, and attempted murder have been used in prosecutions involving other diseases or particularly egregious conduct.
The assault theory applies in states where courts have held that intentional transmission of a disease constitutes unlawful bodily contact. If a person knew they were infected, did not disclose, and intended to transmit the disease, some courts have allowed assault or battery charges to proceed under general criminal statutes even without a disease-specific law.
Attempted murder charges have been filed in a small number of HIV cases where prosecutors argued the defendant intended to kill the victim through transmission. These charges have had mixed results in courts, with some convictions and some acquittals, reflecting the difficulty of proving specific homicidal intent through sexual transmission.
Criminal Theories Used in STD Transmission Prosecutions:
| Criminal Theory | STD Most Commonly Involved | Required Elements | Charge Level |
|---|---|---|---|
| HIV criminal exposure statute | HIV | Knowledge, exposure, non-disclosure | Felony in most states |
| General assault or battery | Any STD | Intent, harmful contact | Misdemeanor to felony |
| Reckless endangerment | HIV, sometimes others | Conscious disregard for transmission risk | Misdemeanor to felony |
| Attempted murder | HIV (rare) | Specific intent to kill through transmission | Felony, potentially life sentence |
| Fraud or sexual assault by fraud | Any STD | Misrepresentation of status to obtain consent | Varies by state |
The sexual assault by fraud theory is increasingly used in cases where the infected person affirmatively lied about their status. A person who told their partner “I was tested and I’m clean” when they knew they were infected has committed fraudulent misrepresentation that negates consent in many jurisdictions.
Can You Go to Jail for Not Disclosing an STD?
Yes, you can go to jail for not disclosing an STD, primarily when the STD is HIV and your state has a criminal exposure statute. In unreformed states, a conviction can result in years or even decades in state prison. In reformed states and for non-HIV STDs, the criminal exposure risk is significantly lower.
The jail risk is highest in states like Texas, Florida, Iowa, Georgia, and Virginia, which retain older, punitive HIV exposure statutes that do not require actual transmission and carry felony penalties. In those states, having unprotected sex while knowing you are HIV-positive without first disclosing that status is sufficient to support a criminal conviction.
Even in states with no disease-specific statute, prosecutors have occasionally filed charges under general criminal theories including assault and reckless endangerment. Those cases are harder to win because they require proof of intent or conscious disregard for the victim’s safety beyond the mere failure to disclose.
Jail Risk by STD and State Type:
| STD | Unreformed HIV Statute State | Reformed HIV Statute State | No HIV Statute State |
|---|---|---|---|
| HIV | High, felony charges possible | Lower, misdemeanor or transmission required | Depends on general law |
| Herpes | Very low, no specific statute | Very low | Very low |
| Chlamydia | Essentially none | Essentially none | Essentially none |
| Syphilis | Low to moderate under general statute | Low | Low |
The message is clear: HIV non-disclosure in an unreformed state creates genuine, serious criminal exposure. Everything else sits in a much lower risk category from a criminal law perspective.
STD Non-Disclosure Laws by State
STD non-disclosure laws across the 50 states reflect a wide range of policy approaches, from aggressive felony prosecution to minimal criminal law engagement with the issue. Understanding your specific state’s framework determines your actual legal exposure.
States with the most aggressive criminal frameworks for HIV non-disclosure include Texas, Iowa, Florida, Georgia, Virginia, and Illinois. These states have felony-level statutes that do not require actual transmission and can be triggered solely by sexual activity with a known-positive person without prior disclosure.
States with reformed or more limited frameworks include California (post-2017 reform to misdemeanor level), Colorado (2022 reform requiring intent), and New York (misdemeanor level with intent requirement). These states still criminalize HIV non-disclosure but at a less severe level and with more specific required elements.
STD Non-Disclosure Law Status: Comprehensive State Overview:
| State | HIV Law Status | Other STD Law | Reform Status |
|---|---|---|---|
| California | Misdemeanor (SB 239, 2017) | General communicable disease | Reformed |
| Texas | Second-degree Felony | General STD statute | Unreformed |
| Florida | Third-degree Felony | Covers all STDs (Statute 384.24) | Unreformed |
| Iowa | Class B Felony (reformed 2023) | N/A | Partially reformed |
| New York | Misdemeanor | General venereal disease law | Under review |
| Colorado | Requires intent (reformed 2022) | N/A | Reformed |
| Illinois | Class 2 Felony | N/A | Unreformed |
| Georgia | Felony | N/A | Unreformed |
Florida’s Statute 384.24 is unique in that it explicitly covers all sexually transmissible diseases, not just HIV. This makes Florida one of the few states where non-disclosure of a disease other than HIV creates a specific statutory criminal exposure.
Is It Illegal to Give Someone an STD on Purpose?
Yes, intentionally transmitting an STD to another person is illegal in every U.S. state, though the specific charge and how it is prosecuted depends on the state’s available statutes and the level of proof available.
Intentional transmission is the clearest case for criminal liability. A person who deliberately infects a partner without consent has committed an intentional harmful act that satisfies the elements of criminal assault and battery regardless of whether a disease-specific statute exists. In states with HIV-specific criminal statutes, intentional transmission can result in aggravated charges and enhanced sentences compared to mere non-disclosure.
Proving intent is the practical challenge. Prosecutors must establish beyond a reasonable doubt that the defendant specifically intended to transmit the disease, not merely that they knew they were infected and had sex without disclosing. Evidence of statements like “I want to infect you” or a pattern of behavior showing deliberate targeting of victims strengthens an intentional transmission case significantly.
Intentional STD Transmission: Legal Framework:
- Criminal assault or battery: Available in all states; harmful intentional contact
- HIV-specific statute with intent enhancement: Available in most states with HIV laws
- Attempted murder (extreme cases): Available if intent to kill through transmission can be proven
- Aggravated assault: Available in states where disease transmission is treated as use of a biological weapon in some statutes
- Civil punitive damages: Available and often larger in intentional transmission cases
The intentional transmission case is legally stronger than a disclosure-only failure case. It is also rarer, because proving specific intent to infect is difficult without direct evidence.
Can You Sue Someone for Giving You an STD?
Yes, you can sue someone for giving you an STD if you can prove that they knew they were infected, failed to disclose that information, and you contracted the disease as a result. Civil lawsuits for STD transmission are distinct from criminal prosecution and can proceed regardless of whether criminal charges were ever filed.
The most common civil theories are battery, fraudulent concealment, and negligence. Battery applies when the infected person intentionally concealed their status, negating consent to the sexual contact. Fraudulent concealment applies when they actively lied about their status. Negligence applies when they failed to take reasonable precautions or failed to disclose when they knew or should have known of their infection.
Proving the source of transmission is the most significant practical challenge. Most STDs have an incubation period, and plaintiffs must establish that the defendant, not some other partner, was the source. DNA typing of certain STD strains has become a tool in some civil cases, but it is not available for all STDs and can be expensive.
Civil Claims Available for STD Transmission:
| Legal Theory | What It Requires | Damages Available |
|---|---|---|
| Battery | Intentional harmful contact, negated consent | Compensatory and punitive damages |
| Fraudulent concealment | Active misrepresentation of STD status | Compensatory and punitive damages |
| Negligence | Failure to disclose known infection, transmission | Compensatory damages |
| Intentional infliction of emotional distress | Outrageous conduct causing severe distress | Emotional distress damages |
Punitive damages are available in battery and fraud cases and can significantly exceed the compensatory award in cases where the conduct was particularly malicious.
Civil Lawsuit for STD Transmission
A civil lawsuit for STD transmission is an independent legal action separate from any criminal case. The plaintiff is the person who contracted the STD. The defendant is the person who transmitted it. The lawsuit proceeds in civil court under a preponderance of evidence standard, which is lower than the beyond-a-reasonable-doubt standard in criminal court.
Successful civil cases for STD transmission have resulted in damage awards ranging from tens of thousands to millions of dollars. A 2012 case in California involving herpes transmission resulted in a $6.75 million verdict, though most settlements and verdicts are in the $50,000 to $300,000 range. The size of the award depends on the severity of the disease, the defendant’s conduct, and the extent of the plaintiff’s damages.
The statute of limitations for civil STD transmission claims varies by state and by the legal theory used. Negligence claims typically follow the standard personal injury statute of limitations, usually two to three years from the date of discovery of the infection. Fraud claims may have a longer limitations period in some states.
Civil Lawsuit Success Factors:
- Proof that defendant knew of the infection before transmission
- Evidence that defendant did not disclose or actively concealed the infection
- Medical evidence establishing the source of transmission
- Documentation of physical, emotional, and financial damages
- Witness testimony or communications establishing defendant’s knowledge
The civil lawsuit is available for any STD, not just HIV. Herpes cases have been the most frequently litigated because herpes is incurable and the long-term impact on the plaintiff’s life is substantial and provable.
Key Takeaway: Civil lawsuits for STD transmission are available for any STD and proceed independently of criminal cases. Successful plaintiffs have recovered substantial damages under battery, fraud, and negligence theories in courts across the country.
Does Using a Condom Change the Legal Obligation to Disclose an STD?
Using a condom does not eliminate the legal obligation to disclose an STD, but it can affect how courts evaluate criminal charges and civil claims. The legal answer varies by state and by the specific statute involved.
In California post-2017 reform, using a condom is one of the factors that can eliminate criminal liability for HIV non-disclosure under SB 239. The reformed statute focuses on whether the person took specific steps to prevent transmission, and condom use is explicitly listed as one such step. This is the most notable example of condom use affecting criminal liability.
In most other states with HIV criminal exposure statutes, condom use is a mitigating factor at sentencing rather than a complete defense. It does not prevent prosecution. Texas, Florida, and Georgia do not recognize condom use as a defense to the exposure offense. The crime is complete upon knowing exposure without disclosure, regardless of protection used.
Condom Use as a Legal Defense: State-by-State:
| State | Does Condom Use Eliminate Criminal Liability? | Effect on Civil Claims |
|---|---|---|
| California | Yes, under SB 239 (post-2017) | Reduces negligence claim |
| Texas | No | May reduce negligence claim |
| Florida | No | May reduce negligence claim |
| Iowa | Partially, under reformed statute | Reduces claim |
| New York | No | May reduce claim |
| Colorado | Mitigating factor | Reduces claim |
The civil side is clearer. Using a condom demonstrates that the infected person took precautions, which can negate or reduce a negligence claim. It does not completely eliminate civil liability, because the failure to disclose may itself constitute battery or fraud regardless of protection used. If a partner would not have consented to sex without the disclosure, condom use does not retroactively create that consent.
Frequently Asked Questions
Is it illegal to not disclose an STD before having sex?
Failing to disclose an STD before sex is illegal in most states when the STD is HIV, under specific criminal exposure statutes.
For other STDs like herpes and chlamydia, there are no specific criminal disclosure laws in any state, though civil lawsuits remain available.
The criminal obligation depends entirely on which STD you have, your state’s specific statute, and whether you knew about the infection at the time.
Is failing to disclose HIV a felony in the United States?
Yes, failing to disclose HIV is a felony in most unreformed states including Texas, Florida, Iowa, Georgia, and Illinois.
Felony sentences can range from two years to 25 years depending on the state’s specific statute and charge level.
California and Colorado have reformed their laws, reducing HIV non-disclosure to a misdemeanor level or requiring actual transmission or intent for felony charges.
Can you go to jail for not telling a partner you have herpes?
There is no specific criminal statute in any U.S. state that makes herpes non-disclosure a crime.
Jail time for herpes non-disclosure is extremely unlikely because no state has enacted a herpes-specific criminal exposure law.
Civil lawsuits for herpes transmission are available and have succeeded, with damage awards ranging from tens of thousands to millions of dollars in documented cases.
Can you sue someone in civil court for giving you an STD?
Yes, you can sue someone for giving you an STD under civil tort theories including battery, fraudulent concealment, and negligence.
Civil cases proceed independently of criminal prosecution and use a lower burden of proof than criminal court.
Successful plaintiffs have recovered compensatory and punitive damages, with some verdicts exceeding $500,000 in cases involving intentional or fraudulent concealment.
Does using a condom eliminate the legal requirement to disclose an STD?
In most states, using a condom does not eliminate the legal obligation to disclose an STD.
California is the notable exception: under SB 239 (2017), HIV-positive individuals who use condoms may avoid criminal liability for non-disclosure.
For civil claims, condom use reduces but does not eliminate negligence liability, and does not address battery or fraud claims arising from the failure to disclose itself.
The law on STD disclosure is more specific than most people realize, and the consequences depend enormously on which disease is involved and which state you are in. HIV carries unique and serious criminal exposure in most of the country. Other STDs sit primarily in civil territory.
Bookmark this guide whether you are trying to understand your own legal obligations or your rights as a potential victim. The state-by-state differences and the specific legal theories covered here are the foundation for understanding how this area of law actually works in 2026.
